Number System Supply the missing figure : 1, 4, 9, 16, 25 .... 49 23 36 16 42 23 36 16 42 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 36
Number System The difference between a two-digit number and the number obtained by interchange the two digits of the number is 27. If the sum of the two digits of the number is 13, what is their product ? 40 38 37 39 40 38 37 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ 10x + y - (10y + x) = 27or 9x - 9y = 27∴ x - y = 3 .......(I)x + y = 13 .......(II)From eqn (I) and (II)x = 8 and y = 5.So the number = 85Therefore, product = 8 x 5 = 40
Number System What is 432 times 119 ? 51408 52408 50408 53408 51408 52408 50408 53408 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP No. 432 x 119 = 51408
Number System If the difference between a number and its three-fourth is 18, find the number. 61 68 57 72 61 68 57 72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
Number System If one-third of one fourth of a number is 15, then three-tenth of that number is: 45 25 54 35 45 25 54 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.
Number System What is 50% of 40% of Rs. 3,450? 690 670 640 630 690 670 640 630 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 40% * 3450 = 1380then, 50 % * 1380 = 690
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