What should come in place of the question mark (?) in the following questions?

$sqrt{?} div 8 imes 31=127.5-3.5$

8888 – 4444 + 222 = ?

51 × ? = 1632

$6^{3} imes 2^{4}-9^{2}=?$

23% of 468 = ?

4 × ? = 6924 ÷ 15

?² × 8 – 250 = 398

68% of 320 + 30 ÷ 0.8 = ?

$left(396 div 16.5+?^{3} ight) div 20=7 frac{9}{20}$

$sqrt{frac{2}{5} imes 950-?}=19$

A train running at the speed of 108 kmph, crosses a 365 metre long platform in 21 seconds. What is the length of the train ?

Radius of a circular garden is 7 metre more than length of a rectangle whose perimeter is 364 metre and breadth is 84 metre. What will be cost of fencing the garden (only at the circumference), if the cost of fencing is 8 per metre ?

What should come in place of the question mark (?) in the following number series ? 9 10 24 81 340 ?

A and B together can complete a piece of work in 16 days. B alone can complete the same work in 24 days. In how many days can A alone complete the same work?

If 43x + 43y = 4816, what is the average of x and y ?

What is the least number to be added to 2530 to make it a perfect square ?

The difference between 20% of a number and $frac{7}{15}$ th of the same number is 124. What is 40% of that number ?

A car manufacturing plant manufactures 96 dozen-cars in eight days. How many dozen cars will the plant manufacture in 17 days ?

What would be the compound interest accrued on an amount of 9,000 at the rate of 11 p.c.p.a. in two years ?

The average of four consecutive odd numbers P, Q, R and S respectively (in increasing order) is 104. What is the sum of P and S ?

The cost of 8 fans and 14 ovens is 36,520. What is the cost of 12 fans and 21 ovens ?

In order to pass in an examination, a student is required to get 280 marks out of the aggregate marks. Hema got 264 marks and was declared fail by 2 percent. What is the minimum passing percentage of the examination ?

The average age of a man and his son is 28 years. The ratio of their ages is 3 : 1 respectively. What is the man’s age ?

On a particular day, sweets were to be equally distributed among 960 students of a school. However, on that particular day 360 students remained absent. Hence each student present on that day got three sweets extra. Had all 960 students remained present that day, how many sweets would each student have got ?

Find the average of the following set of scores. 142, 93, 102, 206, 115, 98

Study the table and answer the given questions.

Number of muffins sold by five different bakeries in 5 different months

What is the average number of muffins sold by bakery T in March, April and July?

What is the difference between the total number of muffins sold by bakeries P and Q together in April and the total number of muffins sold by bakeries R and S together in July?

If the number of muffins sold by bakery T in August was 70% more than that sold by the same bakery in June, what was the number of muffins sold by the bakery T in August?

The total number of muffins sold by bakeries Q and S together in June is what per cent more than the number of muffins sold by bakery P in March?

What is the respective ratio between the total number of muffins sold by bakeries Q and S together in May and the total number of muffins sold by bakeries P and T together in the same month?

What approximate value should come in place of the question mark (?) in the following questions ? ?

(NOTE : You are not expected to calculate the exact value.)

61 × 24.879 + (14.059 – 6) = ?

$sqrt{230} div 2.017+58.794=?$

11.304 × (6.839 – 4.331) = ?

3451 ÷ 9.895 × 3.0126 = ?

(3.805)² × 14.018 – 5.991 = ?