Number System Simplify the 121 * 175 + 363 * 275 363000 328100 None of these 316600 363000 328100 None of these 316600 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 121 * 175 + 363 * 275 => 121 * 175 + 121 * 3 * 275121 * 175 + 121 * 825= 121 * (175 + 825) = 121000
Number System In how many ways can 5 boys be chosen from 6 boys and 4 girls so as to include exactly one girl ? 58 60 54 56 58 60 54 56 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP One girl can be chosen in 4C1 = 4 ways and 4 boys can be chosen in 6C4 = 15 ways ∴ Total number of ways = 4 x 15 = 60 ways.
Number System A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15? 1 9 13 11 1 9 13 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 45 + 31 = 76/15 = 1 (Remainder)
Number System The sum of two numbers is 165 and the difference between them is 9. What is the average of these two numbers ? 82.5 83.5 84.5 85.5 82.5 83.5 84.5 85.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 165x - y = 92x = 174 ∴ x = 87 and y = 78∴ x + y/2 = 165/2 = 82.5
Number System Complete the series : 81, 69, 58, 48, 39 ........ 28 31 30 29 28 31 30 29 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 31
Number System The difference between 35% of a number and 18% of the same number is 93.5 then what is the 40% of that number ? 232 245 220 225 232 245 220 225 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Diff = (35 - 18)% of x = 93.517x/100 = 93.5Therefore, x = 550Therefore, 40% of 550 = 220
EXAMIANS