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)/2 N(N + 1) N2 N2 + 1 N(N + 1)/2 N(N + 1) N2 N2 + 1 ANSWER DOWNLOAD EXAMIANS APP
Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 40 44 88 80 40 44 88 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
Number System Find the number which multiplied by 15 is increased by 196. 26 20 14 28 26 20 14 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,15x - x = 196x = 14
Number System How many figures are required for numbering the pages of a book containing 1000 pages? 6489 2883 2893 3892 6489 2883 2893 3892 ANSWER DOWNLOAD EXAMIANS APP
Number System 432+2170+35=? 729 678 494 523 729 678 494 523 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 494
Number System 384×12×2=? 9216 6123 8465 7487 9216 6123 8465 7487 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9216
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