26.

(12345679 x 72) = ?


A. 88888888 B. 888888888
C. 898989898 D. 9999999998
Answer and Explanation
Answer: Option B
Explanation: 12345679 x 72 = 12345679 x (70 +2)

= 12345679 x 70 + 12345679 x 2

= 864197530 + 24691358

= 888888888

27.

If the product 4864 x 9 P 2 is divisible by 12, then the value of P is:

A. 2 B. 3
C. 8 D. 5
Answer and Explanation
Answer: Option E
Explanation: Clearly, 4864 is divisible by 4.

So, 9P2 must be divisible by 3.

So, (9 + P + 2) must be divisible by 3.

P = 1.

28.

-84 x 29 + 365 = ?

A. 2436 B. 2801
C. -2801 D. -2071
Answer and Explanation
Answer: Option D
Explanation: Given Exp. = -84 x (30 - 1) + 365

= -(84 x 30) + 84 + 365

= -2520 + 449

= -2071

29.

If the number 97215 * 6 is completely divisible by 11, then the smallest whole number in place of * will be:

A. 3 B. 2
C. 1 D. 5
Answer and Explanation
Answer: Option A
Explanation: Given number = 97215x6

(6 + 5 + 2 + 9) - (x + 1 + 7) = (14 - x), which must be divisible by 11.

x = 3

30.

If the number 5 * 2 is divisible by 6, then * = ?

A. 2 B. 3
C. 6 D. 7
Answer and Explanation
Answer: Option A
Explanation: 6 = 3 x 2. Clearly, 5 * 2 is divisible by 2. Replace * by x.

Then, (5 + x + 2) must be divisible by 3. So, x = 2.