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Number System

Number System
Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers?

60, 20
62, 18
65, 15
64, 16

ANSWER DOWNLOAD EXAMIANS APP

Number System
The difference between the two digit number and the number obtained by interchanging its digits is 54. The difference between the digits is?

Nothing can be said.
6
1
4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(10x + y) – (10y + x) = 54x – y = 6

Number System
(2560 x 1.4) +(7400 x 0.6) =?

8024
7234
6543
9160

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8024

Number System
A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by:

5
3
11
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the ten's digit be x and unit's digit be y. Then, number 10x + y.Number obtained by interchanging the digits = 10y + x.(10x + y) + (10y + x) = 11(x + y)which is divisible by 11.

Number System
96% of a number is 19584. What is 56% of that number ?

11224
11324
11424
11524

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be x.According to the question.96% of x = 19584= x = 1958 x 100/96 = 20400∴ 56% of 20400= 20400 x 56/100= 11424

Number System
Sum of square of first number and cube of second number together is 568. Also square of the second number is 15 less than square of 8. What is the value of three-fifth of the first number ?

9
7
6
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the first number be x and the second number be y.∴ y² = 82 - 15 = 64 - 15 = 49∴ y = 7∴ x² + 73 = 568= x² + 343 = 568= x² + 568 - 343 = 225∴ x = √225 = 15∴ 15 x 3/5 = 9

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