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Number System

Number System
If 70% of an equal to 40% of b, then ratio between a and b is?

7: 11
4: 7
None
7: 4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

70 a = 40 ba: b = 4: 7

Number System
If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series?

8/13
6/13
9/13
7/13

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13

Number System
Subtracting 30 from a number, the remainder is one fourth of the number. Find the number?

40
22 1/2
30
45

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

3/4 x = 30 => x = 40

Number System
What should be the least number to be added to the 51234 number to make it divisible by 9?

4
6
3
5

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The least number to be added to the numbers to make them divisible by 9 is equal to the difference of the least multiple of 9 greater than the sum of the digits and sum of the digits.Sum of digits = 15.Nearest multiple of 9 greater than sum of digits = 18.Hence 3 has to be added.

Number System
A certain number successively divided by 2, 5 and 7 leaves remainders 1, 2 and 3 respectively. When the same number is divided by 70, what is the remainder?

35
34
33
36

ANSWER DOWNLOAD EXAMIANS APP

Number System
Look at this series: 1000, 200, 40, ... What number should come next?

8
2
24
14

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

This is a simple division series. Each number is divided by 5. Rule = (1st number / 5 = 2nd number) (2nd number / 5 = 3rd number)....Now, (1000 / 5 = 200), (200 / 5 = 40), (40 / 5 = 8)...So answer is a = 8.

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