Number System (12)² - (4.4)² - (0.04)² = ? 124.6384 125.6384 129.6384 131.6384 124.6384 125.6384 129.6384 131.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
Number System If (35)² is added to the square of a number the answer so obtained is 1394. What is the number ? 13 15 17 11 13 15 17 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² + (35)² = 1394Therefore, x² = 1394 - (35)² = 1394 - 1225 = 169Therefore, x = √169 = 13
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 16 8 12 18 16 8 12 18 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 382 343 396 378 382 343 396 378 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System √207.36 = ? 16.7 15.7 12.3 14.4 16.7 15.7 12.3 14.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √207.36 = √20736/√100 = 144/10 = 14.4
Number System Complete the series : 81, 69, 58, 48, 39 ........ 31 28 29 30 31 28 29 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 31
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