Number System What should come in place of (?) in the following series ? 10, 19, 30, 43, 58, ? 78 77 75 76 78 77 75 76 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is: +9, +11, +13, +15, +17
Number System ?125÷5x ?=6265 153 1452 1253 124 153 1452 1253 124 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 1253
Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 79 74 83 71 79 74 83 71 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 three fourth of a number is subtracted from the number; the value so, obtained is 163. What is that number ? 689 678 652 692 689 678 652 692 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number x (1 - 3/4) = 163∴ Number = 163 x 4 = 652
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 36 18 30 27 36 18 30 27 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
Number System If one-third of one fourth of a number is 15, then three-tenth of that number is: 54 35 25 45 54 35 25 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,1/3 of 1/4 of x = 15x = 15 * 12 = 180So, required number = (3/10 * 180) = 54.
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