Number System If the product of two successive positive integers is 4692, what is the smaller number ? 70 68 64 66 70 68 64 66 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 179 163 146 124 179 163 146 124 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
Number System A number when multiplied by five times of itself give the value equal to 1445. What is the number ? 17 16 18 15 17 16 18 15 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x x 5x = 1445= 5x² = 1445= x² = 289∴ x = 17
Number System (4 86%of 6500) ÷ 36 =? 977.5 677.5 877.5 777.5 977.5 677.5 877.5 777.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
Number System A certain number successively divided by 2, 5 and 7 leaves remainders 1, 2 and 3 respectively. When the same number is divided by 70, what is the remainder? 33 34 35 36 33 34 35 36 ANSWER DOWNLOAD EXAMIANS APP
Number System √9216 + √15376 = ? 224 231 227 220 224 231 227 220 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √9216 + √15376= 96 + 124= 220
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