Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 74 71 79 83 74 71 79 83 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 One half of a two digit number exceeds its one third by 6. What is the sum of the digits of the number? 3 7 5 9 3 7 5 9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x/2 – x/3 = 6=> x =63 + 6 = 9
Number System (4300731) - ? = 2535618 1865113 1765113 1775123 1675123 1865113 1765113 1775123 1675123 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 4300731 - x = 2535618Then, x = 4300731 - 2535618 = 1765113
Number System What is the sum of all the prime numbers from 20 to 40? 120 117 118 119 120 117 118 119 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
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 432+2170+35=? 494 523 729 678 494 523 729 678 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 494
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