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Number System

Number System
√9216 + √15376 = ?

227
231
220
224

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = √9216 + √15376= 96 + 124= 220

Number System
How many numbers up to 300 and 700 are divisible by 2, 3 and 7 both together?

10
8
11
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(700 – 300)/42 = 9 22/42 => 9 Numbers

Number System
The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference of the two digits of the number ?

1
2
3
4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(10x + y) - (10y + x) = 36,9(x - y) = 36/9 = 4

Number System
If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is:

12
28
160
180

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.

Number System
One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number?

9
5
7
3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x/2 – x/3 = 6=> x =63 + 6 = 9

Number System
3√103820 x 3√274620 = ?

3065
3055
3035
3045

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3√103820 = 47 and 3√274620 = 65 ∴ ? = 47 x 65 = 3055

MORE MCQ ON Number System

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