Question:

Six years before the ratio of the ages of two sisters Mitali and Sonali is 2 : 3. If the presentage of Mitali is 30 years, then the present age of Sonali is

A.

28 years

B.

42 years

C.

36 years

D.

48 years

Answer» b. 42 years

Question:

The value of logarithm of 1 to the base 10 is

A.

2

B.

10

D.

1

Answer» c. 0

Question:

If 3x – 1 – 3x – 3 = 8, then the value of (x2 – x + 4) is

A.

10

B.

8 5

C.

12

D.

15

Answer» a. 10

Question:

The value of log7 7 is

A.

0

B.

– 1 7

C.

1/2

D.

1

Answer» d. 1

Question:

The mean proportional between 2 and 8 is

A.

4

B.

16

C.

3

D.

1

Answer» a. 4