Number System √9216 + √15376 = ? 231 224 220 227 231 224 220 227 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √9216 + √15376= 96 + 124= 220
Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 15 16 18 17 15 16 18 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
Number System If (182)² is added to the square of a number, the answer so obtained is 47765. What is the number ? 101 131 121 111 101 131 121 111 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be xTherefore x² + (182)² = 47765Therefore x² = 47765 - (182)2 = 47765 - 33124Therefore x² = 14641, Therefore x = 121
Number System If a + b = 16 and ab = 68, what is the value of a² + b² ? 124 112 120 116 124 112 120 116 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP a + b = 16 Therefore, (a+b)² = (16)² = 256 a² + b² + 2ab = 256Therefore, a² + b² = 256 - 2 x 68Therefore, a² + b² = 256 - 136 = 120
Number System 666 / 6 / 3 = ? 84 37 333 111 84 37 333 111 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 666 * 1/6 * 1/3 = 37
Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 47619 47719 47649 48619 47619 47719 47649 48619 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
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