Number System If a number is subtracted from its square we get 272. Find the number? 22 17 24 14 22 17 24 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
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 In how many different ways can the letters of the word TEST' be arranged ? 8 16 10 12 8 16 10 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word TEST consists of 4 letters in which T comes twice ∴ Number of arrangements= 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12
Number System 8988 / 8 / 4 = ? 280.875 561.75 2247 4494 280.875 561.75 2247 4494 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8988 * 1/8 * 1/4 = 2247/8 = 280.875
Number System Find the least value of 3x + 4y if x2y3 = 6. 6 10 7 3 6 10 7 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 10
Number System 84 * 29 + 365 = ? 2436 2801 - 2071 - 2801 2436 2801 - 2071 - 2801 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP - 84 * (30 - 1) + 365= - (84 * 30) + 84 + 365= - 2520 + 449 = - 2071
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