BIHAR CGL MATHS QUIZ

Question 1:

The ratio of the monthly incomes of $\mathrm{A}$ and $\mathrm{B}$ is $11: 13$ and the ratio of their expenditures is $9: 11$. If both of them manage to save ₹ 4,000 per month, then find the difference in their incomes (in ₹).

2500

3200

4000

3000

Question 2:

The LCM of two numbers is 56 times their HCF, with the sum of their HCF and LCM being 1710 . If one of the two numbers is 240 , then what is the other number?

57

171

1680

210

Question 3:

The length and the breadth of a rectangle are made to increase and decrease, respectively, by 8% and 10%. What is the percentage increase or decrease in its area?

Decrease by 1.8%

Increase by 1.8%

Decrease by 2.8%

Increase by 2.8%

Question 4:

X, Y and Z can do a piece of work in 46 days, 92 days and 23 days, respectively. X started the work. Y joined him after 2 days. If Z joined them after 8 days from the beginning, then for how many days did X work?

16

21

18

13

Question 5:

A car runs first 275 km at an average speed of 50 km/h and the next 315 km at an average speed of 70 km/h. What is the average speed (in km/h) for the entire journey?

58.5

60

59

62

Question 6:

How many numbers are there from 500 to 650 (including both) which are neither divisible by 3 nor by 7 ?

21

121

87

99

Question 7:

A boatman can row his boat in still water at a speed of 9 km/h. He can also row 44 km downstream and 35km upstream in 9 hours. How much time (in hours) will he take to row 33 km downstream and 28km upstream?

7

5

6

8

Question 8:

A sum of money was borrowed and paid back in two equal annual instalments of ₹ 980 , allowing 4% compound interest. The sum (in ₹, to the nearest tens) borrowed was:

1850

1960

1760

2050

Question 9:

Find the value of the following expression $\frac{5-35 \div 5 \times 15+5}{12-2}$

$-9.5$

$-13.5$

$-2.5$

$11.5$

Question 10:

The average of 9 consecutive numbers is 20 . The smallest of these numbers is:

10

20

16

12