Number System What number should replace both the question marks (?) in the following question ? 84 85 83 82 84 85 83 82 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 84
Number System When 732 is subtracted form the square of a number, the answer that is obtained is 5280. What is the number? 97 101 99 103 97 101 99 103 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 - 732 = 5280 x2 = 5280 + (70+3)2 = 5280 + 4900 + 420 + 9 = 10609= 10000 + 2(100)(3) + 32 = (100 + 3)2x = 100 + 3 = 103.
Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 12 160 180 28 12 160 180 28 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 A man engaged a servant on the condition that he would pay him Rs.900 and a uniform after one year service. He served only for 9 months and received uniform and Rs.650, find the price of the uniform? Rs.80 Rs.85 Rs.100 Rs.90 Rs.80 Rs.85 Rs.100 Rs.90 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9/12 = 3/4 * 900 = 675 650 ------------- 251/4 -------- 251 --------- ? => Rs.100
Number System 96% of a number is 19584. What is 56% of that number ? 11424 11524 11224 11324 11424 11524 11224 11324 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question.96% of x = 19584= x = 1958 x 100/96 = 20400∴ 56% of 20400= 20400 x 56/100= 11424
Number System If one third of 3/4 of a number is 21. Then find the number? 840 63 84 630 840 63 84 630 ANSWER DOWNLOAD EXAMIANS APP
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