Number System If the product of two successive positive integers is 4692, what is the smaller number ? 70 68 66 64 70 68 66 64 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∵ 68 x 69 = 4692
Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 204 222 210 234 204 222 210 234 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
Number System When (21)² is subtracted from the square of a number the answer obtained is 1584. What is the number ? 55 65 35 45 55 65 35 45 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x² - (21)² = 1584= x² - 441 = 1584 = x² = 1584 + 441 = 2025∴ x = √2025 = 45
Number System Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is: 9 11 15 13 9 11 15 13 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the three integers be x, x + 2 and x+ 4.Then,3x = 2(x + 4) + 3x = 11Third integer = x + 4 = 15.
Number System In how many different ways can the letters of the word TEST' be arranged ? 10 16 8 12 10 16 8 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 If the difference between a number and its three fifths is 62, what is the number ? 155 165 145 175 155 165 145 175 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
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