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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
84
83
81

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
432+2170+35=?

678
729
523
494

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

494

Number System
7.98 x 3.75 + 1.28 x 15.5 = ?

49.765
46.765
47.765
48.765

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

? = 29.925 + 19.84 = 49.765

Number System
?2704 x ?2209=?

3444
1444
2444
4444

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2444

Number System
Find the smallest number which should be multiplied with 520 to make it a perfect square.

55
None of these
30
120

ANSWER DOWNLOAD EXAMIANS APP

Number System
When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number?

99
101
103
97

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.

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