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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 ?

84
82
81
83

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

Number System
Find the least number which when divided by 35 and 11 leaves a remainder of 1 in each case.

386
384
388
391

ANSWER DOWNLOAD EXAMIANS APP

Number System
(800 / 64) * (1296 / 36) = ?

420
None of these
500
460

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given Exp.= 800/64 * 1296/36 = 12.5 * 36 = 450

Number System
Find the average of the following set of scores 450, 1050, 12, 390, 143, 286, 550, 999

485
490
495
480

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Required average score                    = (450 + 1050 + 12 + 390 + 143 + 286 + 550 + 999) / 8                   = 3880 / 8                   = 485

Number System
Which one of the following represents the sum of the first n even numbers?

N(N + 1)
N2
N(N – 1)
N2+ 1

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

N (N + 1)

Number System
What is 846 times 323 ?

283298
273258
293798
264258

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

846 x 323 = 273258

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