Explanation:

Threee boys have marbles in the ratio of 19:5:3. If the boy with the least number has 9 marbles, how many marbles does the boy with the highest number have? Correct Answer 57 Smaller ratio 3 = 9 So, Smaller ratio 1 = 9/3 = 3 Now, Highest ratio 19 = 19×3 = 57

Explanation:

In the given series, which number will come next: 91, 86 , 76, 61 , ______? Correct Answer 41 ধারা : 91 , 86, 76, 61 ব্যবধান : - 5, - 10, - 15, - 20 পরবর্তী সংখ্যা = 61 - 20 = 41

Explanation:

The length and breadth of a square of a are increased by 40% and 30% receptively. The area of the resulting rectangle exceeds the are of the square by? Correct Answer 82% Let, length is = x so, area is = x2 40% increase in length = x + 2x/5 = 7x/5 30% increase in breadth = x + 3x/10 = 13x/10 Area = (7x/5)×( 13x/10) = 91×2/50 Increasing area = (91×2/50) - x2 = 41×2/50 Percentage = {(41×2/50) x2}×100 = (41/50)×100 = 82%

Explanation:

what is the miximum number number of 3×3 squares that can be formed from the squares in the 6×6 checker board to the right? Correct Answer 16 ধরে নিন আপনার হাতে একটি 3 × 3 square আছে যেটিকে এই cheker board এর উপর দিয়ে সরাচ্ছেন, Total 16 টি 3 × 3 square করা সম্ভব।

Explanation:

A circular wheel 28 inches in diameter rotates the same number of inches per second as a circular wheel 35 inches in diameter. If the smaller wheel makes x revolutions per second, how many revolutions per minutes does the larger wheel make in terms of x? Correct Answer 48x For smaller wheel, Circumference = 2×π×28/2 = 28π Revolve in 1 second = x times Revolve in 60 seconds = 60x times So, distance = 28π×60x For larger wheel, Circumference = 2×π×35/2 = 35π Let, Revolve per minute = n So, distance = 35πn Now, 28π×60x = 35πn Or, n = (28π × 60x)/35π Or, n = 48x

Explanation:

One third of the faculty members of a department are female. Sixteen of the male teachers are unmarried while 60% of them are married. The total number of faculty members in the department is_____ Correct Answer 60 Let, Total number = x Number of female = 1/3 of x = x/3 Number of male = x - x/3 = 2x/3 Married male = 60% of 2x/3 = 2x/5 ATQ, 2x/3 2x/5 = 16 Or, 4x/15 = 16 Or, x = 60

Explanation:

A, B C center into partnership with investments in the ratio of 5:7:8. If at the end of the year A's share of profit is Tk. 42360, how much is the total profilt? Correct Answer Tk. 169,440 As the profit distributed according to the investment ratio the profit and investment ratio will be equal Let, A's Profit = 5x Tk 5x = 42360 x = 8472 B's profit = 59304 C's profit = 67776 Total profit = 43260 + 59304 + 67776 = 169440

Explanation:

which number is the odd one in oval A and B respectively ? Correct Answer 42,52 42 বাদে, 24,36,48 হচ্ছে 12 এর গুণতক (oval A) তেমনি 52 বাদে, 12,18, 36, 30 হচ্ছে 6 এর গুণিতক (oval B)

Explanation:

একটি কোণকের ভূমির ব্যাসার্ধ ৫ সেমি এবং উচ্চতা ১২ সেমি হলে হেলান উচ্চতা কত/ সঠিক উত্তর ১৩ সেমি কোণকের জন্য চিত্রানুযায়ী ⸫ পিথাগোরাসের সূত্রানুযায়ী, I2 = h2 + r2 ⸫I = h2 + r2 [হেলানো উন্নতি একটি (length) বলে সবসময় + ve]

Explanation:

A manufacturer sells three products i.e A, B C. Product A costs 200 and sells for 250, product B costs 150 and sells for 180, Product C cost 100 and sells for 110. On which product, he has maximum percentage of profit? Correct Answer A only Profit from A = 250 - 200 = 50tk Percentage = (50×100)/200 = 25% Profit from B = 180 - 150 = 30tk Percentage = (30×100)/150 = 20% Profit from C = 110 - 100 = 10tk Percentage = (10×100)/100 = 10% So, maximum profit from A.

Explanation:

tanθ=3/4 হলে sinθ এর মান কত? সঠিক উত্তর 3/5 tanθ = লম্বভুমি = 34 = 32 + 42 = 25 = 5sinθ = লম্বঅতিভূজ⸫sinθ = 35

Explanation:

which number replaces the question mark? Correct Answer 6 4 = 6 - 2 6 = 9 - 3; 2 = 3 - 1 9 = 19 - 10; 3 = 10 – 7 ∴1 = 7 - ? = ? = 6

Explanation:

25?=?81. what is the missing number? Correct Answer 45 25/45 = 45/81 = > 5/9 = 5/9 [ Both side are equally divided ]

Explanation:

তিনটি শিন েএকটি কাজ যথাক্রমে ৪,৫ এবং ৬ ঘণ্টায় করতে পারে। দুটি মেশিন সর্বোচ্চ ক্ষমতায় কাজ করে এক ঘণ্টা কতটুকু কাজ করতেদ পারবে? সঠিক উত্তর ৯/২০ অংশ তিনটি মেশিনের মধ্যে দুটি সর্বোচ্চ ক্ষমতায় কাজ করলে প্রথম দুটির হিসাব করতে হবে কেননা এদের করতে সময় লাগে (৬ ঘণ্টার তুলনায় ৪ ও ৫ ঘণ্টা সময়)। অর্থাৎ প্রথম দুটির ক্ষমতা বেশি। প্রথমটি ৪ ঘণ্টায় করে ১টি কাজ ⸫ ১ ” ” 14 ” ” দ্বিতীয়টি ৫ ঘণ্টায় করে ১টি কাজ ⸫ ১ ” ” 15 ” ” ⸫ দুটি মেশিন সর্বোচ্চ ক্ষমতায় কাজ করে এক ঘণ্টায় করে = 14 + 15 অংশ =  5 + 420 অংশ  =  920 অংশ

Explanation:

Consider the following recursive function fun (s , y). what is the value of fun ( 4, 3) int fun ( int x , int y) if ( x =0) return y; return fun ( x,1, x+y); | Correct Answer 13 The function fun() calculates and returns ((1 + 2 … + x - 1 + x) + y) which is x(x + 1)/2 + y. After Completing X = 4 y = 3 Output 1st Pass 3 7 No 2nd Pass 2 10 No 3rd Pass 1 12 No 4th Pass 0 13 No 5th pass The (x = = 0) evaluates and gives output y = 13 13

Explanation:

In a certain code 'TABLE' is written as WDEOH. How would 'SKY' be written in that code? Correct Answer VNB T এর দুটি বণৃ পরেরটি W A এর দুটি বণৃ পরেরটি D তেমনি S এর দুটি বণৃ পরেরটি V K এর দুটি বণৃ পরেরটি N V এর দুটি বণৃ পরেরটি B

Explanation:

If you rearrange the letters "LNGEDNA" . you have the name of a (n): Correct Answer country Rearrange কররে “England” পাওয়া যায়, যা একটি country.

Explanation:

If X is the same color as Z, then it must be true that Correct Answer W is a different color from any other country R,S, X and Y each are adjacent to W, so W can not be the same color as X, as x is the same color as Z, So W can not be the same color as Z too. So W is different from any other country.

Explanation:

which of the following countries can be the same color as W? Correct Answer Z Z is not adjacent to W.

Explanation:

which of the following is a pair of countries that must be different in color from each other? Correct Answer S and Z R and S are no adjacent.

Explanation:

Total production in July is 40 units. what is the approximate average unit cost for July? Correct Answer 140 The average cost for 40 units Would be given by (Total cost/No.of units) = ( 4000 + 800 + 1200)/40 = 600040 = 150

Explanation:

ABC Ltd. is considering increasing the production level . What is the approximate marginal cost of increasing production form its July level of 40 units to 41 units? Correct Answer 130 The variable cost at 40 units production is 4000 and at 46 units is around 4800 – the graph is almost a straight line between these two points. Thus the marginal cost of increasing production from 40 units = 8006 = 130approximately.

Explanation:

which of the following is a pair of countries that can be the same color as each other? Correct Answer R and S As S and Z are adjiacent, they must be different in color.

Explanation:

From the data provided it can be inferred that , for production levels in the range of 0 to 60 units: Correct Answer MC is an increasing function of production quantity . It can be seen that the marginal cost is increasing as production quantify is increasing. So, option (a) is the correct ans.

Explanation:

In 2001, how many categories each comprised more than 25 million workers? Correct Answer Three 15% of 150 million = 22.5 million < 25 million Now, 18% of 150 ‘’ = 27 million So, 18%,20%, and 28% would be the categories with more than 25 million workers.

Explanation:

Answer the question on the basis of the information given below : From 2001 to 2015 , there is a projected increase in the number of workers in which of the following of the following categories? Correct Answer a,b& c 8% of 150 = 12 mill. 7% of 175 = 12.25 mill, increased in sales 6% in service, clearly increased 20% of 150 = 30 mill 18% of 175 = 31.5 mill, increase in clerical. So, a, b and c all project increase

Explanation:

which of the following describes all values of x for which 1 -x2≥0? Correct Answer -1≤x≤1 1 - x2≥0⇒x2 - 1≤0⇒(x + 1)(x - 1)≤0The roots are - 1 and 1‘

Explanation:

A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream. Correct Answer 4 hours Downstream speed = speed of boat + speed of stream = 13 km/hr + 4 km/hr = 17 km/hr Now, 17 km goes in 1 hour 1 km goes in 1/17 hour 68 km goes in ( 68×1)/17 hour = 4 hour