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: 24 27 22 30 24 27 22 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System The sum of two numbers is 25 and their difference is 13. Find their product. 325 315 104 114 325 315 104 114 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
Number System If the difference between a number and its three fifths is 62, what is the number ? 145 155 175 165 145 155 175 165 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ x - 3x/5 = 62or x = 62 x 5/2 = 155
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? 23 34 78 65 23 34 78 65 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65
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 Three numbers which are co-prime to one another are such that the product of the first two 551 and that of the last two is 1073. The sum of the three numbers is 74 93 85 110 74 93 85 110 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 85
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