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Number System

Number System
When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ?

46
47
45
44

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46

Number System
(3² x 4² x 5) ÷ 36 = (?)² - 80

14
16
10
12

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

(?)² = 3² x 4² x 5/36 + 80= 20 + 80 = 100∴ ? = √100 = 10

Number System
576÷ ? x114=8208

11
10
8
9

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

Number System
The product of two consecutive odd numbers is 6723. Find is the greater number.

77
83
85
80

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the first odd number be x.Then, the other odd number would be x + 2.∴ x(x+2) = 6723= x2 + 2x = 6723= x2 + 2x = 6723= x2 + 2x - 6723 = 0= x2 + 83 - 81 x - 6723 = 0= x(x+83) - 81 (x + 83) = 0= (x + 83) (x - 81) = 0= (x + 83) (x - 81) = 0= x - 81 = 0∴ x = 81Hence, greater number = x + 2 = 81 + 2 = 83

Number System
Which is the smallest fractions among the following ?

27/31
13/15
11/13
15/19

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

11/13 = 0.8461,13/15 = 0.8666,27/31 = 0.87,15/19 = 0.789

Number System
486+32×25—59=?

596
582
528
567

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

528

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