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Number System

Number System
What number should replace both the question marks (?) in the following question ?

82
83
85
84

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

84

Number System
If (17)3 is subtracted from the square of a number, the answer so obtained is 2143. What is the number ?

81
83
82
84

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x² - (17*17*17)  = 2143or x² = 2143 + 4913 = 7056∴ x = 84

Number System
576÷ ? x114=8208

9
11
8
10

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

8

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

14
8
2
24

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.

Number System
In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ?

18
28
24
22

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28

Number System
Twenty times a positive integer is less than its square by 96. What is the integer?

24
30
Cannot be determined
20

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