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? 35 34 33 36 35 34 33 36 ANSWER DOWNLOAD EXAMIANS APP
Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 74 71 83 79 74 71 83 79 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP n x (n + 2) = 6723= n² + 2n - 6723 = 0= n² + 83n - 81n - 6723 = 0= n(n + 83) - 81 (n + 83) = 0Therefore, (n - 81) (n + 83) = 0Therefore, n = 81, n + 2 = 83
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 25 24 23 26 25 24 23 26 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System {3√4913}² = ? 121 333 225 289 121 333 225 289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (3√4913)² = (17)² = 289
Number System (4 86%of 6500) ÷ 36 =? 777.5 877.5 977.5 677.5 777.5 877.5 977.5 677.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 877.5
Number System How many numbers up to 100 are divisible by 7? 100 93 14 107 100 93 14 107 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
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