Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 17 18 16 15 17 18 16 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 7 5 3 11 7 5 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System If the average of two numbers is 88.5 and one number is 5.5 less than the average. Find out the next number. 91 86 94 97 91 86 94 97 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 94
Number System The sum of three consecutive numbers is 87. The greatest among these three number is: 26 29 28 30 26 29 28 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x, x + 1 and x + 2 Then,x + (x + 1) + (x + 2) = 873x = 84x = 28Greatest number, (x + 2) = 30.
Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 641.68 631.68 621.68 651.68 641.68 631.68 621.68 651.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System What should come in place of question mark (?)? 8 : 1 1 : : 72: 79 109 89 99 79 109 89 99 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let ? = xTherefore 8 : 11 : 72 : xTherefore x = (11 x 72) / 8 = 99
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