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Number System

Number System
A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is:

24
30
27
22

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

27

Number System
The difference between a number and its three-fifth is 50. What is the number?

None of these
125
75
100

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x - 3/5 x = 50 => 2/5 x = 50x = (50 * 5)/2 = 125.

Number System
(95.6x 910.3) ÷ 92.56256 = 9?

13.34
15.54
12.24
14.44

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

13.34

Number System
4.78% of 1255 + 3.24% of 440=0.5% of ?

14849
13849
12849
11849

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

0.5 x ?/100 = 4.78 x 1255/100 + 3.24 x 440/100= 59.989 + 14.256∴ ? = 74.245 x 100/0.5 = 14849

Number System
What is the remainder when 263251 is divided by 9?

3
8
1
6

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

If the sum of the digits of a number is divisible by 9, the number will be divisible by 9.2 + 6 + 3 + 2 + 5 + 1 = 19The nearest multiple of 9 is 18.19 - 18 = 1.

Number System
The product of two successive numbers is 4556. Which of the following is the larger of the two numbers?

67
63
78
68

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