Number System Which is the largest fraction among the following ? 24/25 21/23 12/13 21/22 24/25 21/23 12/13 21/22 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 Which one of the following is the sum of the numbers 1, 3, 5, 7, 9…. up to nth number? N(N + 1)/2 N(N + 1) N2 + 1 N2 N(N + 1)/2 N(N + 1) N2 + 1 N2 ANSWER DOWNLOAD EXAMIANS APP
Number System Find the greatest number which leaves the same remainder when it divides 25, 57 and 105. 18 8 16 12 18 8 16 12 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 105 - 57 = 4857 - 25 = 32105 - 25 = 80The H.C.F of 32, 48 and 80 is 16.
Number System A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number? 8 None of these 3.5 6 8 None of these 3.5 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x. Then,3(2x + 9) = 752x = 16 => x = 8
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1260 1300 1240 1280 1260 1300 1240 1280 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System 4550 ÷ 25% of ? = 130 130 140 125 135 130 140 125 135 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 4550 ÷ ? x 25/100 = 130= 4550 ÷ ?/4 = 130= 4550 x 4/? = 130= ? x 130 = 4550 x 4= ? = 4550 x 4/130 = 140
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