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Number System

Number System
What should come in place of question mark (?)? 8 : 1 1 : : 72:

79
89
99
109

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99

Number System
384×12×2=?

8465
6123
7487
9216

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

9216

Number System
√(17)² + (17)² + (5)² - 2 = ?

17
18
19
16

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = √49 + 289 + 25 - 2 = √361 = 19

Number System
How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ?

36
56
48
52

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36

Number System
The difference between two integers is 5. Their product is 500. Find the numbers.

20, 25
21, 26
15, 20
30, 25

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the integers be x and (x + 5). Then, x(x + 5) = 500 x2 + 5x - 500 = 0 (x + 25)(x - 20) = 0 x = 20So, the numbers are 20 and 25.

Number System
432+2170+35=?

523
494
729
678

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

494

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