Number System Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1) N2 N2 + 1 N(N + 1)/2 N(N + 1) N2 N2 + 1 N(N + 1)/2 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the nearest to 25268 which is exactly divisible by 467? 25228 25208 25308 25218 25228 25208 25308 25218 ANSWER DOWNLOAD EXAMIANS APP
Number System 106 * 106 - 94 * 94 = ? 2400 1906 1904 2000 2400 1906 1904 2000 ANSWER DOWNLOAD EXAMIANS APP
Number System What least number shall be added to 4700 to make it a perfect square ? 71 81 91 61 71 81 91 61 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (69)² = 4761 and (68)² = 4624Clerly 4624 < 4700 < 4761So 61 should be added to make 4700 a perfect square.
Number System If R2 = S3 = K, where R, S and K are integers. Find the smallest positive integral value of K. (Greater than 1) 54 88 64 75 54 88 64 75 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 64
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 378 382 343 396 378 382 343 396 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
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