Number System The average of five consecutive even numbers A, B, C, D and E is 54. What is the product of'B' and 'E' ? 4098 2871 3016 1456 4098 2871 3016 1456 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Because, The even numbers are consecutive and their average is 54.∴ The number C will be 54.∴ A = 50, B = 52, D = 56, E = 58B x E = 52 x 58 = 3016
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 93 110 85 74 93 110 85 74 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 85
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1200 1092 1082 1192 1200 1092 1082 1192 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the number, when 15 is subtracted from 7 times the number, the result is 10 more than twice of the number 15 4 5 7.5 15 4 5 7.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.7x -15 = 2x + 10 => 5x = 25 => x = 5
Number System A number consists of two digits. If 3/5 of 1/5 of the number is 9. Find the sum of its two digits? 60 12 7 8 60 12 7 8 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x * 3/5 * 1/5 = 9x = 75 => 7 + 5 = 12
Number System √360 - 225 x 2 + 379 = ? 19 18 20 17 19 18 20 17 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = √360 - 225 x 2 + 379 = √360 - 450 + 379 = √289= 17
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