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Number System

Number System
Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be?

9, 6
6, 9
10, 5
7, 8

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Number System
Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is:

11
9
15
13

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the three integers be x, x + 2 and x+ 4.Then,3x = 2(x + 4) + 3x = 11Third integer = x + 4 = 15.

Number System
217 * 217 + 183 * 183 = ?

80578
81268
79698
80698

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Number System
How many figures are required for numbering the pages of a book containing 1000 pages?

3892
2883
6489
2893

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Number System
In each of the following numbers, what should be the missing digit in the indicated place such that the number is a multiple of 11?

5
3
2
8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Divisibility of 11: If the difference of the sum of the digits at odd places and the sum of the digits at even places of a number is zero or a multiple of 11, then that number is divisible by 11.As per divisibility rule of 11, difference = (x + 21) - 18 = x + 3=> x + 3 = 11 => x = 8

Number System
8988 / 8 / 4 = ?

4494
2247
561.75
280.875

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8988 * 1/8 * 1/4 = 2247/8 = 280.875

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