Number System 7.8 x 4.5 x 4.2/0.14 = ? 1012 1087 1032 1053 1012 1087 1032 1053 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7.8 x 4.5 x 4.2/0.14 = 1053
Number System If (47)² is added to the square of a number the answer thus obtained is 2290. What is the number ? 7 9 8 10 7 9 8 10 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x Therefore, x² + (47)² = 2290Therefore, x² = 2290 - 2209 = 81Therefore, x = 9
Number System Three numbers are in ratio of 3: 4 :5. If the sum of first & third numbers is more than second number by 52, which will be largest number? 34 78 65 23 34 78 65 23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65
Number System What is the average of the following set of numbers ? 173, 192, 198, 204, 211, 223, 227 234 222 210 204 234 222 210 204 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Avg = 173 + 192 + 198 + 204 + 211 + 223 + 227/7 = 1428/7 = 204
Number System How many numbers up to 100 are divisible by 7? 100 107 93 14 100 107 93 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 100/7 = 14 2/7 => 14 Numbers
Number System If (83)² is subtracted from the square of a number, the answer so obtained is 8487. What is the number ? 146 124 179 163 146 124 179 163 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x Therefore, x² - (83)² = 8487x² = 8487 + (83)²x² = 8487 + 6889x² = 15376Therefore, x² = 15376 x = 124
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