Number System Which is the largest fraction among the following ? 21/22 12/13 24/25 21/23 21/22 12/13 24/25 21/23 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 21/23 = 0.913,12/13 = 0.92323/25 = 0.92, 21/22 = 0.9545, 24/25 = 0.96
Number System In how many different ways can be the letters of the word PENCIL be arranged among themselves ? 720 860 640 510 720 860 640 510 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Total six letters are there and hence the number of arrangements = 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720
Number System 1089/? = ?/1296 1082 1278 1348 1188 1082 1278 1348 1188 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (?)² = 1089 x 1296(?)²= (11 x 11 x 9) x (12 x 12 x 9)(?)= 11 x 12 x 9= 1188
Number System (12.04 x 7.5 + 0.8 x 45) ÷ 3 = ? 54.7 45 42.1 42.6 54.7 45 42.1 42.6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (90.3 + 36) ÷ 3 = 126.3/3 = 42.1
Number System How many figures are required to number the pages the pages of a book containing 365 pages? 977 967 987 897 977 967 987 897 ANSWER DOWNLOAD EXAMIANS APP
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? None 2 4 6 None 2 4 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
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