CIVIL Batch - B Group

Rajeev is 5 times older than his son. After 2 years sum of ages will be 40. Calculate their present ages.

• 9

• 6

• 2

• 3

Sum of two numbers is 50. If one number is 4 times the other, find the numbers.

• 10,40

• 20,40

• 20,10

• 10,10

If a - b = 3 and a² + b² = 29, find the value of ab.

• 10

• 12

• 15

• 18

Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed?

• 256

• 432

• 512

• 640

A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be:

• 22

• 23

• 24

• 26

(469 + 174)2 - (469 - 174)2

= ?

(469 x 174)^{2 -} (469-174)² = ?

(469X174)

• 2

• 4

• 295

• 643

David gets on the elevator at the 11^th floor of a building and rides up at the rate of 57 floors per minute. At the same time, Albert gets on an elevator at the 51st floor of the same building and rides down at the rate of 63 floors per minute. If they continue travelling at these rates, then at which floor will their paths cross ?

• 19

• 28

• 30

• 37

log ₈2 + log ₈(1/2) = ?

• 0

• 1

• 2

• 3

log _√2 (1/8)=?

• 1

• -2

• -6

• 9

Find the value of log3 2187.

• 6

• 8

• 7

• 9