Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 180 160 28 12 180 160 28 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, x + y = 20 and x - y = 8x2 - y2 = (x + y)(x - y) = 20 * 8 = 160.
Number System Find the least number when successively divided by 2, 3 and 7 leaves remainders 1, 2 and 3 respectively? 61 67 65 75 61 67 65 75 ANSWER DOWNLOAD EXAMIANS APP
Number System 384×12×2=? 7487 9216 8465 6123 7487 9216 8465 6123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9216
Number System 35%of ?=242 542 693 394 487 542 693 394 487 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System Two third of three- fifth of one fourth of a number is 24, what is 30% of that number? 69 42 90 72 69 42 90 72 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 2/3 * 3/5 * 1/4 = 24x = 240240 * 30/100 = 72
Number System If one-third of one fourth of a number is 15, then three-tenth of that number is: 54 35 25 45 54 35 25 45 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.
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