Number System What is the sum of all the prime numbers from 20 to 40? 120 117 119 118 120 117 119 118 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 724 845 673 636 724 845 673 636 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
Number System Simplify the 121 * 175 + 363 * 275 363000 316600 None of these 328100 363000 316600 None of these 328100 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 121 * 175 + 363 * 275 => 121 * 175 + 121 * 3 * 275121 * 175 + 121 * 825= 121 * (175 + 825) = 121000
Number System 9 3/4 + 7 2/17 - 9 1/15 = ? 9 719/1020 9 817/1020 7 719/1020 7 817/1020 9 719/1020 9 817/1020 7 719/1020 7 817/1020 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given sum = 9 + 3/4 + 7 + 2/17 - (9 + 1/15)= (9 + 7 - 9) + (3/4 + 2/17 - 1/15)= 7 + (765 + 120 - 68)/1020 = 7 817/1020
Number System In a fraction, twice the numerator is two more than the denominator. If 3 is added to the numerator and the denominator each, then the resultant fraction will be 2/3 .What was the original fraction 19/12 11/12 7/12 17/12 19/12 11/12 7/12 17/12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 7/12
Number System If the difference between a number and its three-fourth is 18, find the number. 68 57 61 72 68 57 61 72 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
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