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Number System

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

82
81
83
84

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
Of an amount, 20% of 25% of 30% is Rs 75. Then what is the original amount ?

Rs. 2000
Rs. 4000
Rs. 5000
Rs. 3000

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the amount be x.∴ X x 20/100 x 25/100 x 30/100 = 75∴ X = 75 x 5 x 4 x 10/3  = 5000

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

83
84
82
85

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

84

Number System
Supply the missing figure : 3, 11, 8, 16, 13 .... 18

21
12
28
18

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

21

Number System
50% of 8/15 of 9/4 of 5/3 of 333 = ?

666
444
555
333

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

50% of [8x9x5/15x4x3 x 333]= 50% of 666= 333

Number System
If the following fractions 7/6, 6/7, 5/3, 8/13 and 6/5 are arranged in descending order, which will be the last in the series?

9/13
6/13
7/13
8/13

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

7/6 = 1.166, 6/7 = 0.857,5/3 = 1.66,8/13 = 0.615,6/5 = 1.2Therefore, 5/3 > 6/5 > 7/6 > 6/7 > 8/13

MORE MCQ ON Number System

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