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Number System

Number System
Given √2 = 1.414, the value of √8 + 2√32 - 3√128 + 4√50 is

8.484
8.684
8.784
8.584

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8.484

Number System
The product of two consecutive odd numbers is 4095 What is the greater number ?

74
61
69
65

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65

Number System
A number exceeds by 25 from its 3/8 part. Then the number is?

35
39
40
32

ANSWER DOWNLOAD EXAMIANS APP

Number System
√207.36 = ?

14.4
16.7
12.3
15.7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

√207.36 = √20736/√100 = 144/10 = 14.4

Number System
The sum of two numbers is 25 and their difference is 13. Find their product.

104
325
315
114

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114

Number System
If the fraction 8/6, 7/5, 18/13, 9/5 and 7/11 are arranged in descending order of their values, which one will be the second ?

7/5
3/4
1/9
2/7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8/6 = 1. 333, 7/5 = 1.4, 18/13 = 1.3849/5 = 1.8 and 7/11 = 0.636Therefore, Descending order is 9/5 > 7/5 > 18/13 > 8/6 > 7/11Therefore Second fraction is 7/5

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