Explanation:

what is the number of integers between 101 and 199 which exactly divisible by 5 or 7? Correct Answer 30 There ae 19 divisible by 5 and 14 divisible by 7 এদের মধ্যে 3টি both 5 এবং 7 দ্বারা divisible So,Total integers = 19 + 14 - 3 = 30

Explanation:

৩টি আপেল এবং ৪টি কমলালেবুর দাম ৩২টাকা। ৪টি আপেল এবং ৩টি কমলালেবুর দাম ৩১ টাকা। ১টি আপেল, ১টি কমলালেবু এবং ১টি পেঁপের দাম ২৮ টাকা। পেঁপের মূল্য কত? সঠিক উত্তর ১৯ টাকা ৩ টি আপেল + ৪ টি কমলালেবু = ৩২ টাকা ৪ টি আপেল + ৩ টি কমলালেবু = ৩১ টাকা - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ৭ টি আপেল + ৭ টি কমলালেবু = ৬৩ টাকা [যোগ করে] ৭(১টি আপেল + ১ টি কমলালেবু) = ৬৩ টাকা ১টি আপেল + ১ টি কমলালেবু = ৬৩/৭ = ৯ টাকা আবার,  ১টি আপেল + ১টি কমলালেবু + ১টি পেঁপে = ২৮ টাকা ১টি আপেল + ১ টি কমলালেবু = ৯ টাকা - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - [বিয়োগ করে]  ১টি পেঁপে = ১৯ টাকা

Explanation:

The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg . What might be the weight of the new person? Correct Answer 85 kg Total weight increased = (8x2.5)kg = 20kg so,Weight of new person = (65 + 20) = 85kg

Explanation:

If selling price is doubled, the profit triples, Find the profit percent, Correct Answer 100 ধরি, উৎপাদন খরচ x এবং selling price y তাহলে 3(y - x) = (2Y - x) or,y = 2x এবং profit = (Y - x) = (2x - x) = x So,the percent of profit x = (xx×100%) = 100%

Explanation:

তিনটি সংখ্যার গড় ৬ এবং উক্ত তিনটি সংখ্যাসহ ৪টি সংখ্যার গড় ৮। চতুর্থ সংখ্যার ১/২ অংশ নির্ণয় কর। সঠিক উত্তর ৭ ৩টি সংখ্যার সমষ্টি = ৩×৬ = ১৮ ৪টি সংখ্যার সমষ্টি = ৪×৮ = ৩২ সুতরাং,  ৪র্থ সংখ্যাটি = ৩২ - ১৮ = ১৪ ৪র্থ সংখ্যার অর্ধেক = ১৪/২ = ৭

Explanation:

৯৬ টি আম x, y এবং z-এর মধ্যে এমনভাবে ভাগ করে দেয়া হলো যে, x পেল z-এর ৪ গুণ এবং z পেল y-এর ৩ গুণ আম। y কয়টি আম পেল? সঠিক উত্তর ৬ x : z = ৪ : ১ = (৪×৩) : (১×৩) = ১২ : ৩ z : y = ৩ : ১ সুতরাং,  x : z : y = ১২ : ৩ : ১ সুতরাং,  y পেল = ১ / (১২ + ৩ + ১) × ৯৬ = ৬টি

Explanation:

3 pumps , working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day? Correct Answer 12 ধরা যাক, প্রতিদিনের Working hour 'x' বেশি পাম্প, কম working hour per day কম দিন,বেশি " " " " pumps 4:3Days 1:2: : 8:xSo,4×1×x = 3×2×8or,x = 3×2×84 = 12

Explanation:

what least number must be added to 1056 , so that the sum is completely divisible by 23? Correct Answer 2 23|1056|4595 - 136116 - 21 ⸫ প্রয়োজনীয় least number = (23 - 21) = 2

Explanation:

আবু ব্যাংকে ৯০০০ টাকা রেখে ২ বছরে ১৮০০ টাকা মুনাফা পেল। বার্ষিক সুদের হার কত ছিল? সঠিক উত্তর ১০% ব্যাখাঃ ৯০০০ টাকার ২ বছরের সুদ ১৮০০ টাকা ১ টাকার ১ বছরের সুদ ১৮০০/(৯০০০×২) টাকা ১০০ টাকার ১ বছরের সুদ = (১৮০০×১০০)/(৯০০০×২) = ১০ টাকা। অর্থাৎ, সুদের হার ১০%

Explanation:

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. what is the probability that the ticket drawn has a number which is a multiple of 3 or 5? Correct Answer 9/20 S = [1,2,3,4, - - - - - - 19,20] ধরি, E = event of 3 অথবা 5 এর multiple পাবার সম্ভাব্যতা = [3,6,9,12,15,18,5,10,20] ⸫ P(E) = n(E)/n(S) = 9/20

Explanation:

If product of 3 consecutive integers is 120, then the sum of the integers is-- Correct Answer 15 সহজ উপায় হচ্ছে Answer এ দেয়া Number গুলো observe কর 6x7x8 = 336;5x9x7 = 210 and 4x5x6 = 120; So, the sum of the integers is 4 + 5 + 6 = 15

Explanation:

There are 900 students in a school . 4% of them left the school and 50% of the remaining are girls. How many girls remained? Correct Answer 432 900 জন এর 4% = 900 x .04 = 36 36জন চলে যাওয়ায় বাকি থাকে = 900 - 36 = 864 এবং বাকি 864এর 50% girls = 864 x .50 = 432

Explanation:

The minimum value of 2x2 +8x -5 is Correct Answer -13 2x2 + 8x - 5 = 2(x2 + 2.x.2 + 22) - 8 - 5 = 2(x + 2)2 - 13 যখন X + 2 = 0,তখন 2x2 + 8x - 5 এর value সবনিন্ম, যা - 13

Explanation:

A person walking 5/6 of his usual rate is 40 minutes late. What is his usual time? Correct Answer 3 hours 20 minutes Let, usual time is t and usual rate is 1 unit. According to Question ⸫ 1 × t = 5/6 (t + 40) ⇒6t = 5(t + 40) ⇒t = 200 minutes. ⸫ 3 hrs 20 minutes.

Explanation:

দুটি বক্ররেখা এমন আকৃতির যে তাদের যে কোনো পাশেই বাড়ানো হোক না কেন তারা কখনো পরস্পরকে ছেদ করবে না। এ ক্ষেত্রে রেখা দুটি --- সঠিক উত্তর সমান্তরাল একমাত্র সমান্তরাল রেখাই কখন ও পরস্পরকে ছেদ করে না

Explanation:

One dog tells the other that there are two dogs in front of me. The other one also shouts that he too had two behind him. How many are they? Correct Answer 3 The number of Dog are three (3)

Explanation:

Running at the same constant rate 6 identical machines can produce a total of 270 bottles per minute . At this rate, how many bottles could 10 such machines produce in 4 minutes? Correct Answer 1800 ধরা যাক, required bottle সংখ্যা 'x' বেশি বেশি machine, বেশি bottle " " minute, " bottle pumps 4:3Days 1:2: : 8:xSo,4×1×x = 3×2×8or,x = 3×2×84 = 12

Explanation:

Jesmin spent one-third of her money on books and half of the remaining money on clothing. She then spent three fourth of what she had left on food. She had Tk. 500 left over. How much money did she start with? Correct Answer Tk. 6,000 Spent on books = 1/3 Spent on clothing = 1/2 of (1 - 1/3) = 1/2 × 2/3 = 1/3 Spent on food = 3/4 × { 1 - (1/3 + 1/3)} = 3/4 × (1 - 2/3) = 3/4 × 1/3 = 1/4 Left over = 1 - (1/3 + 1/3 + 1/4) = 1 - (4 + 4 + 3)/12 = 1 - 11/12 = 1/12 Now,  1/12 ≡ 500 TK Then,  she started with 500×12 = 6000 TK

Explanation:

There are 12 more apples than oranges in a basket of 36 apples and oranges. How many apples are in the basket? Correct Answer 24 Let, oranges = x and Apples = x + 12 So, x + (x + 12) = 36 or,2x = 24 So,x = 12 So, Apples = 12 + 12 = 24

Explanation:

Of the fruit that arrives at a cannery, 20 percent by weight is rejected before processing. Of the fruit that is processed, 15 percent by weight is rejected be fore canning. Of the fruit that arrives at the cannery, what percent by weight is canned? Correct Answer 68% Let the amount arrives be F. Remaining before processing = F - 20% of F = 0.8F Remaining after processing = 0.8F - 15% of 0.8F = 0.8F - 0.12F = 0.68F = 68% of F So, amount of food canned =  68%

Explanation:

Increasing the original price of an item by 20% and then decreasing the price by 20% is equivalent to Correct Answer 4% decrease here, first increase the original price 20%then decrease 20%original price decrease=20-20-(20*20)/100=4%

Explanation:

A roast was cooked for 4 hours. The internal temperature of the roast rose from 32০ C to 145০ C. What was the average rise in temperature? Correct Answer 28.25০ C/hr AVERAGE=145-324=28.250

Explanation:

If the value of X and Y in the fraction X/Y are both doubled, how does the value of the fraction change? Correct Answer remains the same Let,x=3,y=2x/y=3/2if we double x & y, x/y=3×2/2×2=3/2the fraction remains unchanged

Explanation:

If a coin is tossed once, what is the probability of getting a "HEAD" Correct Answer 0.5 A coin has two sides. So probability of  head / tell is ½ or 0.5

Explanation:

How much is .01 X 0.01 X 0.001 = ? Correct Answer 0.0000001 .01 X 0.01 X 0.001 =0.0000001

Explanation:

The price of an item changed from Tk. 120 to Tk. 100. Later, the price decreased again from Tk. 100 to Tk. 80 and finally the price decreased from Tk. 80 to Tk. 60. What oif the three decreases was larger in percentage term? Correct Answer 3rd decrease 1st decrease = (120 - 100)/120×100% = 16.67% 2nd decrease = (100 - 80)/100×100% = 20% 3rd decrease = (80 - 60)/80×100% = 25% So, 3rd decrease was the largest.

Explanation:

An employee is entitled to 20% of his basic pay as dearness Allowance (DA). If his basic pay is Tk. 6300, what is total pay. Correct Answer Tk. 7560 Total pay = 6300 + 20% of 6300 = 6300 + 1260 =  7560 TK

Explanation:

By investing Tk. 1,00,000 in six months, a man earns Tk. 1500 as profit as profit.What is the rate of interest earned? Correct Answer 3% We know,  interest, I = P n r Here,  n = 6/12 = 0.5 year Now,  I = P n r or,  1500 = 100000 × 0.5 × r or,  r = 1500 / (100000×0.5)×100% = 3%

Explanation:

A man pays 5% this annual income as tax. If he paid Tk. 600 as tax last year, what was his annual income? Correct Answer Tk. 12,000 Let the annual income be X. Then,  5% of X = 600 or,  5/100 of X = 600 So,  X = 600×100/5 = 12000 TK

Explanation:

A shopkeeper sells 5 mangoes at a price he bought 4 mangoes. What percentage (%) of loss or gain? Correct Answer 20% Let the price of 4 mangoes bought be X. Price per mango bought = X/4 Price per mango sold = X/5 Loss = (X/4 - X/5) / (X/4) × 100% = (X/20) / (X/4) ×100% = 20%

Explanation:

A clock slows down by one minute every 24 hours. how long will it take to slow down by one hour? Correct Answer 60 days 1 hour = 60 min 24 hour = 1 day Clock slows down by 1 min in 1 day So, clock slows down by 60 min in 60 days.

Explanation:

A gas tank that is 1/3 full requires 6 gallons to make it 5/6 full. What is its full capacity? Correct Answer 12 gallons 1/3 x + 6 = 5/6 x = > 6 = 1/2 x ∴x = 12

Explanation:

Harun is twice as old as Jasim, who is three years older than Dina. If Harun's age is five times Dina's age, how old in years is Jasim? Correct Answer 5 Harun = H,  Jasim = J, Dina = DH = 2J,         J = 3+D,         H = 5D2J = 5D2J = 5(J-3)2J = 5J-153J = 15J = 5Jasim is 5 years old. (Ans)

Explanation:

If 3 is subtracted from a number, the result is 6 more than twice the number. The number is --- Correct Answer -9 Let the number be X. Then,   X - 3 = 2X + 6 or,   2X - X = - 3 - 6 or,  X = - 9

Explanation:

If 40% of all women are voters, and 52% of the population is women, what percent of the population are women voters? Correct Answer 20.8 মনে করি, মোট জনসংখ্যা = 100 জন Women দের সংখ্যা = 52 জন Women দের ভোটার সংখ্যা = 52×(40/100) = 20.8

Explanation:

If b<2 and 2x-3b=0, which of the following must be true? Correct Answer x If b < 2, then multiplying the inequality by 3 yields 3b < 6 Manipulating the equation, we have 2x = 3b; thus: = 2x < 6 ∴x < 3

Explanation:

If 60% of a rectangular floor is covered by a rectangular rug of 9 feet by 12 feet, what is the area in square feet of the floor? Correct Answer 180 Area of rectangular RUG = (base)(height) = (9)(12) = 108 This RUG covers 60% of the FLOOR In other words, 108 = 60% of the area of the FLOOR Or we can write: 108 = 0.6(area of FLOOR) So, 108 /0.6 = area of FLOOR Evaluate to get: 180 = area of FLOOR

Explanation:

If 8x+8y=64, what is the average of x and y? Correct Answer 4 x এবং y এর গড় অর্থাৎ (x + y)/2 এর মান বের করতে হবে ।    এখন, 8x + 8y = 64        = > 8 (x + y) = 64      = > 8(x + y)/16 = 64/16 [ 16 দ্বারা উভয় পক্ষকে ভাগ করে ]      = > (x + y)/2 = 4

Explanation:

Which one of the following is greater than 2/3? Correct Answer 8/11 2/3 = .67 33/50 = .66 8/11 = .73 3/5 = .6 13/27 = .48

Explanation:

If an inspector rejects 0.08% of a product as defective, how many products will he examine in order to reject 2? Correct Answer 2500 Inspector rejects 0.08% Let there be x meters. No. if defective maters = 0.08% of x = > 2 = (0.08/100)×x = > (200/0.8) = x = > x = 20000/8​   ∴ x = 2500 ∴ Inspector examines 2500 meters and reject 2

Explanation:

একজন শ্রমিকের ২০০ টাকা প্রমিত ব্যয়ে ১০ ঘণ্টায় একটি কাজ করার কথা ছিল। সে ২৪০ টাকা খরচ করে ৯ ঘণ্টায় কাজটি করলো। তার কার্য সম্পাদন সম্পর্কে নিচের কোন উক্তিটি সঠিক? সঠিক উত্তর সে দক্ষ ছিল কিন্তু ফলপ্রসূ নয় একজন শ্রমিকের ২০০ টাকায় ১০ ঘণ্টায় একটা কাজ করার কথা থাকলেও সে ২৪০ টাকায় ৯ ঘণ্টায় কাজ করে। অর্থাৎ সে দক্ষ হলেও টাকা বেশি লাগায় তা ফলপ্রসূ হয়নি।

Explanation:

10 men survive 24 days on 15 cans of food. How many cans are needed for 8 men to survive 36 days? Correct Answer 18 1 men can survive 1 day on = 15/ 10×24 = 15/240 cans 8 men can survive 1 day = 8×15/240 = 1/2 cans 8 men can survive for 36 days = 36/2 = 18 cans therefore, 8 men can survive for 36 days = 36/2 = 18 cans

Explanation:

After taking 30 socks out of the dryer. Dina noticed that the ratio of blue socks to brown socks to black socks was 2 : 3 : 5. How many black socks were in the dryer? Correct Answer 15 অনুপাতের যোগফল = (2 + 3 + 5) = 10 Black মোজার সংখ্যা = 30 ×(5/10) = 15 টি

Explanation:

To avoid paying a toll on a direct road, I go west 10 miles, south 5 miles, west 30 miles and north 35 miles. What is the length of the toll road Correct Answer 50 I drive west 10 miles, south 5 miles, west 30 miles, and north 35 miles = west 40 miles, north 30 so we get, (30)² + (40)² = n² or,900 + 1600 = n² or,2500 = n² ∴n = 50 or - 50 Throwing out the negative answer, we get the distance to be 50 miles ans: 50 miles