Number System What is the sum of all the prime numbers from 20 to 40? 120 118 119 117 120 118 119 117 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 23 + 29 + 31 + 37 = 120
Number System Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is: 11 15 9 13 11 15 9 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 On converting the following base-2 numeral in base ten, 1101101, we get 106 108 107 109 106 108 107 109 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 109
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 ? 6/7 3/5 12/25 13/25 6/7 3/5 12/25 13/25 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the fraction be x/yWe have 150x/120y = 9/15= x/y = 12/25
Number System Subtracting 30 from a number, the remainder is one fourth of the number. Find the number? 45 22 1/2 40 30 45 22 1/2 40 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 3/4 x = 30 => x = 40
Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 27 30 24 22 27 30 24 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27