Number System 65 x 288 ÷ 52 = 1.8 x ? 210 200 190 180 210 200 190 180 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 65x288/52x1.8 = 200
Number System What is the sum of 1 + 2 + 3+ ... + 27 ? 382 378 396 343 382 378 396 343 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Sum = 27 x (27 + 1)/2= 27 x 28/2= 27 x 14= 378
Number System 7.98 x 3.75 + 1.28 x 15.5 = ? 47.765 46.765 48.765 49.765 47.765 46.765 48.765 49.765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 29.925 + 19.84 = 49.765
Number System The product of two consecutive odd numbers is 4095 What is the greater number ? 74 65 61 69 74 65 61 69 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the two consecutive odd numbers be 2x - 1 and 2x + 1.(2x - 1) (2x - 1) = 4095= 4x² - 1 = 4095= 4x² = 4096= x² = 1024∴ x = 32∴ The numbers are 63 and 65.Greater number = 65
Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 631.68 641.68 651.68 621.68 631.68 641.68 651.68 621.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 99 103 95 92 99 103 95 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
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