mathematics MCQs
Showing 50 questions (Total: 16798)
If 3^(x-y)=27 and 3^(x+y)=243,then x is equal to
Correct Answer:
A: 4
০.১×০.১-০.১=০.১ হলে প্রশ্নবোধক চিহ্নের ঘরে কত বসবে?
Correct Answer:
খ: ০.১°
An article costs Tk. 500 and the what is the profit % for the seller if he sells and offers a discount of 10% on the marked price ?
Correct Answer:
B: 44%
In a certain school,20% of student are below 8 years of age.The number of students above 8 years of age is two-third of the number of students of 8 years of age which is 48.What is the total number of students in the school?
Correct Answer:
D: 100
Sum of 4 consecutive even numbers is greater than three consecutive odd numbers by 81 . If the sum of the least odd and even numbers is 59 then find the sum of largest of odd and even numbers is 59 then find the sum of largest odd and even numbers.
Correct Answer:
A: 69
∆ABC এর ∠A=50°,∠B=45° হলে ∆ABC হলো (i)সমবাহু (ii) সমদ্বিবাহু (iii) সমকোণী নিচের কোনটি সত্য?
Correct Answer:
গ: (ii),(iii)
চাকরি পাওয়ার সম্ভবনা ৪৫ হলে চাকরি না পাওয়ার সম্ভবনা কত?
Correct Answer:
ক: ১৫
f(x)=4-x2 হলে f এর রেঞ্জ কত?
Correct Answer:
গ: -2≤x≤2
A train passes a platform in 40 sec and a woman standing on the train is 108 km /hr. what is the length of the platform in 25 seconds . The speed of the train is:
Correct Answer:
D: 26
A Number is as much greater than 36 as is less than 86 . Find the Numbers.
Correct Answer:
A: 68
30 pens and 75 pencils altogether were purchased for Tk. 510. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream.
Correct Answer:
D: 9 hrs
y=x2 বক্ররেখার (2,3) বিন্দুতে ঢাল কত?
Correct Answer:
গ: 4
In a box there are 10 apples and 2/5th of the apples are rotten . If three apples are taken out from the box, what will be the probability that at least one apples is rotten .
Correct Answer:
C: 5/6
If A can do 1/4 of a work in 3 days and B can do 1/6 of the same work in 4 days , how much will A get if both work together and are paid Tk. 180 in all?
Correct Answer:
B: Tk. 120
∫1xdx=?
Correct Answer:
A: In|x|+c
(3.5)4 - এর মান কত?
Correct Answer:
গ: 225
.১×.০১×.০০১.২×.০২×.০০২ এর মান কত?
Correct Answer:
ক: ১৮
x2-2=0 হলে x হলো __ (i)মূলদ; (ii) অমূলদ; (iii) বাস্তব নিচের কোনটি সত্য?
Correct Answer:
গ: (ii),(iii)
X, Y and Z can do a piece of work in 6 hours . X and Y can do the same work in 8 hours and Y and Z can do the same work in 12 hours. In how many times will X and Z do the same work?
Correct Answer:
B: 8 hours
x2-3x+2 এবং x2-5x+6 এর ল.সা.গু=কত?
Correct Answer:
ক: (x-1)(x-2)(x-3)
dxdx=?
Correct Answer:
B: 12x
ABC ত্রিভুজের AB=AC এবং ∠A=80° হলে ∠B=?
Correct Answer:
B: 50°
If x =2y+3 and y=-2, then
Correct Answer:
A: x is greater than -1
Explanation:
If x =2y+3 and y=-2, then Correct Answer x is greater than -1 x = 2y + 3 = 2( - 2) + 3 = - 1
x2+1x2=3 হলে x3+8x3=?
Correct Answer:
B: 9
If m=(-8)4and n= (-8)7, then
Correct Answer:
A: m is greater than n
Explanation:
If m=(-8)4and n= (-8)7, then Correct Answer m is greater than n m = ( - 8)4 = ( - 1)4 (8)4 = 84n = ( - 8)7 = ( - 1)7 (8)7 = - 87∴ m is greater than n
মূল বিন্দু হতে (-5,5) এবং (5,k) বিন্দুদ্বয়ের দূরত্ব সমান হলে k এর মান কত?
Correct Answer:
গ: 5
x>yz<0 হলে নিচের কোনটি সঠিক?
Correct Answer:
ঘ: xz<yz
Explanation:
x>yz<0 হলে নিচের কোনটি সঠিক? সঠিক উত্তর xz&lt;yz প্রশ্নঃ x>yz<0 হলে নিচের কোনটি সঠিক?ব্যাখ্যাঃ yz < 0 মানে হলো y অথবা z দুইটার একটা নেগেটিভ। x তিনটির মধ্যে বড়। তাই এর সাথে নেগেটিভ সংখ্যা গুণ করলে ছোট হবে। so, xz<yz
In an examination , 34% of the studens failed in mathematics and 42% failed in English. If 20% of the students failed in both the subjects , then find the percentage of students who passed in both the subjects .
Correct Answer:
C: 44%
x+y=6 এবং xy =8 হলে (x-y)2 এর মান কত?
Correct Answer:
খ: 4
Explanation:
x+y=6 এবং xy =8 হলে (x-y)2 এর মান কত? সঠিক উত্তর 4 (x - y)² = (x + y)² - 4xy = 6² - 4×8 = 36 - 32 = 4
A clock strikes once at 1 o'clock, twice at 2 o'clock, thrice at 3 o'clock and so on. How many times will it strike in 24 hours?
Correct Answer:
C: 156
Explanation:
A clock strikes once at 1 o'clock, twice at 2 o'clock, thrice at 3 o'clock and so on. How many times will it strike in 24 hours? Correct Answer 156 1 + 2 + 3 + 4 + .......... + 12 = 78 12 + 12 = 24 hours so 78*2 = 156
A box is made in the form of a cube. If a second cubical ox has inside dimensions three times those of the first box, how many times as much does the second box contain?
Correct Answer:
D: 27
125 gallons of a mixture contains 20% water. what amount of additional water should be added such that water content is raised to 25%?
Correct Answer:
D: 253 gallons
The perimeter of a rectangle is 26 cm. The rectangle is converted to a square by tripling the width and taking a quarter of the length. what is the perimeter of the resulting square?
Correct Answer:
B: 12 cm
Explanation:
The perimeter of a rectangle is 26 cm. The rectangle is converted to a square by tripling the width and taking a quarter of the length. what is the perimeter of the resulting square? Correct Answer 12 cm Let, original length =l and width =wso, perimeter = 2(l+w) = 26⇒ (l+w) = 13 ------------ (i)given that, new width =3wNew length = l/4A.T.Q.l/4 = 3wl = 12w ------------- (ii)substituting the value of l in the equation, (i) we get,12w+w = 13⇒ 13w = 13⇒ w= 1so, l =12So, the length of a side of the square = l/4 = 12/4 = 3 cm, or 3w = 3×1 = 3 cm.So, the perimeter of the resulting square = 4 × 3 cm = 12 cm
A,B and C enter into partnership by making investments in the ratio 3: 5: 7. After a year, C invests another Tk. 337600 while a withdraws Tk. 45600 . The ratio of investments then changes to 24:59:67. How much doses A invest initially?
Correct Answer:
B: Tk. 141600
a+b=7 , ab = 10 হলে (a-b)2=?
Correct Answer:
A: 9
Explanation:
a+b=7 , ab = 10 হলে (a-b)2=? Correct Answer 9 (a - b)² = (a + b)² - 4ab = 7² - 4×10 = 49 - 40 = 9
কোন সংখ্যার ১৩ সংখ্যাটির 15 অপেক্ষা 4 বেশি ?
Correct Answer:
ক: 30
a3+b3 এর উৎপাদক কোনটি?
Correct Answer:
খ: (a+b)(a2-ab+b2)
P and Q start a business with initial investment in the ratio of 13: 8 Their corresponding annual profits are in the ration of 7: 5. If p invested his money for 7 months, find the time period for which Q invested his money.
Correct Answer:
A: 8 months
একটি সমবাহুু ত্রিভুজের একটি দৈর্ঘ্য a একক হলে, ত্রিভুজটির ক্ষেত্রফল কত বর্গ একক?
Correct Answer:
গ: 34a2
Explanation:
একটি সমবাহুু ত্রিভুজের একটি দৈর্ঘ্য a একক হলে, ত্রিভুজটির ক্ষেত্রফল কত বর্গ একক? সঠিক উত্তর 34a2 সমবাহু ত্রিভুজের একটি বাহুর দৈর্ঘ্য a একক হলে, ত্রিভুজটির ক্ষেত্রফল 34a2 বর্গ একক।
Karim has 40% more stamps than Rahim, if he gives 45 of his stamps to Rahim, then Rahim will have 10% more stamps than Karim. How many stamps did karim begin with?
Correct Answer:
D: 245
A Can do a job in 24 days, B in 9 days and C in 12 days. B and C together start the work but leave after 3 days. How much time was taken by A to complete the remaining work?
Correct Answer:
C: 10 days
In a group of 15, 7 can speak Spanish , 8 can speak French and 3 can speak neither . What fracton of the group can speak both French and spanish?
Correct Answer:
A: 1/5
x=3+2 হলে, x3+1x3
Correct Answer:
B: 183
Explanation:
x=3+2 হলে, x3+1x3 Correct Answer 183 x = 3 + 2 = >1x = 13 + 2 = 3 - 2(3 + 2)(3 - 2) = 3 - 2(3)2 - (2)2 = >1x = 3 - 23 - 2.'.1x = 3 - 2.'. x + 1x = 3 + 2 + 3 - 2 = 23 এখন, x3 + 1x3 = (x + 1x)3 - 3.x.1x(x + 1x) = (23)3 - 3×23 = 8×33 - 63 = 243 - 63 = 183
If x is not a negative number, what is the maximum possible value of 22-3x?
Correct Answer:
C: 1
মিঃ রেজা তাঁর সম্পদের 12% স্ত্রীকে, 58% ছেলেকে এবং অবশিষ্ট 720000/- টাকা মেয়েকে দিলেন। তার সম্পদের মোট মূল্য কত?
Correct Answer:
ক: 2400000 Tk
Explanation:
মিঃ রেজা তাঁর সম্পদের 12% স্ত্রীকে, 58% ছেলেকে এবং অবশিষ্ট 720000/- টাকা মেয়েকে দিলেন। তার সম্পদের মোট মূল্য কত? সঠিক উত্তর 2400000 Tk স্ত্রী ও ছেলেকে সম্পদ দেওয়ার পর অবশিষ্ট সম্পদের পরিমাণ (100 - 12 - 58%) = (100 - 70)% = 30% 30% সম্পদের মূল্য = 720000 টাকা ∴ 100% " " = 720000×100%30% = 2400000 টাকা।
Two number are in the ratio 3:5. If 9 is subtracted from each,the new numbers are in the ratio 12:23.The smaller number is;
Correct Answer:
B: 33
logx(18)=-2 হলে, x = কত?
Correct Answer:
খ: 22
Explanation:
logx(18)=-2 হলে, x = কত? সঠিক উত্তর 22 logx(18) = - 2 ⇒x - 2 = 18[.; x = logaN , ax = N]⇒1x2 = 18⇒x2 = 8⇒x2 = (22)2.'. x = 22 [.'. পাওয়ার বা ঘাত সমান]
A sum of money is to be distributed among A,B,C,D in the preposition of 5:2:4:3 .If C gets tk.1000 more than D.What is B's share?
Correct Answer:
D: tk.2000
Ravi leaves home for stadium which is 12 km form his house. After the stadium, and club all fail in a time, then what is the minimum distance he has to travel to get back home?
Correct Answer:
C: 5 km
If x4=81 and y2=49, then the maximum possible value of y - x is
Correct Answer:
B: 10
Explanation:
If x4=81 and y2=49, then the maximum possible value of y - x is Correct Answer 10 x4 = 34 x = 3 এবং, , y2 = 72 y = 7 অতএব, x + y = 7 + 3 = 10