Number System What is the sum of all the prime numbers from 20 to 40? 118 119 117 120 118 119 117 120 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System If the numberator of a fraction is increased by 50% and denominator by 20% the fraction become 9/15. What was the original fraction ? 3/5 6/7 13/25 12/25 3/5 6/7 13/25 12/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
Number System In a division sum, the quotient is 120, the divisor 456 and the remainder 333, find the dividend? 56053 5553 50553 55053 56053 5553 50553 55053 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 120 * 456 + 333 = 55053
Number System 7589 - ? = 3434 4242 11023 1123 4155 4242 11023 1123 4155 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
Number System If the difference between the squares of two consecutive numbers is 47, what is the smaller number ? 24 23 26 25 24 23 26 25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be (x + 1) and x.Therefore, (x + 1)² - x² = 47x² + 2x + 1 - x² = 472x + 1 = 47Therefore, x = 46/2 = 23
Number System 63.602 + 153.756 + 94.754 - 84.321 - 122.204 = ? 141.587 140.587 142.587 143.587 141.587 140.587 142.587 143.587 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 312.112 - 170.525 = 141.587
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