3
Q:

The sum of the digits of a two-digit number is 9 less than the number. Which of the following digits is at unit's place of the number ?

 A) 1 B) 2 C) 3 D) data inadequate

Explanation:

Let the ten's digit be x and unit's digit be y. Then, (10x + y) - (x + y) = 9 or x = 1.

From this data we cannot find  y, the unit's digit. So the data is inadequate..

Q:

The coefficient of x in

 A) 3y2 B) 27y2 C) -27y2 D) -3y2

Explanation:

0 405
Q:

The largest number which should replace * in the number 2365*4 to make the number divisible by 4 is:

 A) 9 B) 2 C) 0 D) 8

Explanation:

0 568
Q:

$43÷16×2-1=?$

 A) 3 B) -2 C) 8 D) 15

Explanation:

0 168
Q:

If

 A) 110 B) 10 C) 80 D) 140

Explanation:

0 289
Q:

Sum of four consecutive odd numbers is 328. Find the largest number.

 A) 85 B) 98 C) 79 D) 97

Explanation:

0 542
Q:

What is the smallest integer that is divisible by 3, 7 and 18?

 A) 63 B) 252 C) 72 D) 126

Explanation:

0 536
Q:

If the mean of the numbers 27 + x, 31 + x, 89 + x, 107 + x and 156 + x is 82.then the mean of 130 + x, 126 x, 68 + x, 50 + x 1 + x is :

 A) 80 B) 75 C) 50 D) 70

Explanation:

0 158
Q:

Arrange the following in the decreasing order?

(√23 – √21), (√19 – √17), (√21 – √19)

 A) (√23 – √21) > (√21 – √19) > (√19 – √17) B) (√23 – √21) > (√19 – √17) > (√21 – √19) C) (√19 – √17) > (√21 – √19) > (√23 – √21) D) (√21 – √19) > (√23 – √21) > (√19 – √17)

Answer & Explanation Answer: C) (√19 – √17) > (√21 – √19) > (√23 – √21)

Explanation: