4, 3, 4, 9, 32, ?

1800, ?, 60, 15, 5, 2.5

What will come in the place of question mark (?) in the following number series:

11, ?, 16, 21, 29, 41

?, 100, 150, 375, 1312.5

0, 6, 24, 60, ?, 210

Study the bar chart given below and answer the following questions.

Bar chart shows the number of books read by 4 different persons (A, B, C & D) in 2005 and 2006.

Find average number of books read by A, C & D in 2005.

Find ratio of books read by B & C together in 2005 to books read by A & D together in 2006.

Books read by A & D together in 2005 are what percent more than books read by C in 2006?

Books read by A & C together in 2005 are how much more or less than books read by B & D together in 2006?

Books read by B & C together in 2006 are what percent of books read by B in 2005?

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

$frac{{17.28 div ?}}{{3.6 imes 0.2}} = 200$

486 ÷ ? × 7392 ÷ 66 = 1008

$14frac{2}{7}{ m{\% of}}4200 div sqrt {576} = {(?)^{frac{1}{2}}}$

$frac{2}{7} imes frac{5}{6} imes frac{3}{8} imes ? = 90$

(0.05 × 6.25) ÷ 2.5 =?

1496 ÷ 17 = ?% of 220

(36% of 180) ÷ 0.4 = ?

0.08% of 55500 – 16.4 = ?

35% of 150 × 16 = ? – 22

(3080 + 6160) ÷ ? = 330

Difference of the compound interest received in first year and second year at 20% per annum at CI is Rs 1200 then find the sum?

Find the total distance covered by boat in each upstream and downstream in 7 hours if the speed of boat in still water and speed of current is 21 km/h and 3 km/h respectively?

Ratio of income of A to that of B is 5:9. If expenditure of A is $frac{3}{8}th$ of his income and expenditure of B is $frac{4}{9}th$ of his income and sum of their saving is Rs 1950 then find the difference between their income?

A alone can do a work in 12 days while A and B together can do that work in 7.5 days. Find the time taken by C alone to do that work if C takes 3 days more than that of B alone to do that work?

Ratio of base and perpendicular side of a right-angled triangle is 3:4 and its base is equal to the side of a square having area 81 cm². Find the perimeter of the triangle?

In each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer

II. $2{y^2} - y - 15 = 0$

I. $5{x^2} + 17x + 6 = 0$

II. $2{y^2} + 11y + 12 = 0$

I. $7{x^2} - 19x + 10 = 0$

II. $8{y^2} + 2y - 3 = 0$

${x^2} - 8x + 15 = 0$

${y^2} - 3y + 2 = 0$

I. $3{x^2} - 7x + 4 = 0$II.$2{y^2} - 9y + 10 = 0$

A person travels half of the distance at the speed of x km/h and remaining half of the distance at 4x km/h. Find the value of ’x’ if the average speed is 36.8 km/h?

A, B and C invested in a ratio of 7: 8: 5 in a business. They got an annual profit of Rs. 136800. If A and C withdrew their amount at the end of 3 months and 7 months respectively. Then find the difference between A and C’s share of profit?

Retailer sold one article at $33frac{1}{3}{ m{\% }}$ profit and another at 100% profit. Find his overall profit percentage if the selling price of both the article is same?

A mixture has milk and water in the ratio 4: 1. When 50% of the mixture is taken out and replaced by 24 liters of water then the ratio of milk to water in the mixture becomes 1: 1. Find initial quantity of mixture.

4 years ago, ratio of Shivam’s age to Deepak’s age was 2: 3 and ratio of Shivam’s age 4 years ago to Deepak’s age 5 years hence is 8: 15. Find present age of Shivam.