Number System If the sum and difference of two numbers are 20 and 8 respectively, then the difference of their square is: 28 180 160 12 28 180 160 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 number of factors of 300 excluding 1 and itself. 16 14 15 18 16 14 15 18 ANSWER DOWNLOAD EXAMIANS APP
Number System What least number must be subtracted from 2641 so that the remainder left, when divided by 10,15 and 25, is 7 in each case ? 94 84 87 81 94 84 87 81 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP LCM of 10, 15, 25 = 150When we drive 2641 by 150 the remainder is 91.But the remainder should be 7.So, the number to be subtracted from 2641 is 91 - 7 = 84.
Number System Supply the missing figure : 1, 4, 9, 16, 25 .... 49 42 36 16 23 42 36 16 23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 36
Number System The population of a town increases by 15% in the first year and decreases by 25% in the second year. If its current population is 168480 then what will be its population after two years ? 145314 145714 145914 145214 145314 145714 145914 145214 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Population of the town= 168480 x 115/100 x 75/100= 145314
Number System The product of two successive numbers is 4556. Which of the following is the larger of the two numbers? 68 63 67 78 68 63 67 78 ANSWER DOWNLOAD EXAMIANS APP
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