Number System What is the sum of all the prime numbers from 20 to 40? 118 120 119 117 118 120 119 117 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System 106 * 106 - 94 * 94 = ? 1904 1906 2400 2000 1904 1906 2400 2000 ANSWER DOWNLOAD EXAMIANS APP
Number System If (72)² is subtracted from the square of a number, the answer thus obtained is 4617. What is the number ? 103 95 99 92 103 95 99 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x² - (72)² = 467Therefore, x² = 4617 + 5184Therefore, x² = 9801 Therefore, x = 99
Number System If the difference between a number and its three-fourth is 18, find the number. 72 68 61 57 72 68 61 57 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.According to the question,x - 3x/4 = 18= x/4 = 18= x = 4 x 18 = 72
Number System 7589 - ? = 3434 4242 1123 4155 11023 4242 1123 4155 11023 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 7589 - x = 3434Then x = 7589 - 3434 = 4155
Number System 148 x 3.75 x 4 = 111 x ? 17 19 24 20 17 19 24 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 148 x 3.75 x 4/111 = 20
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