Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1260 1280 1300 1240 1260 1280 1300 1240 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System Complete the series : 11, 12, 17, 18, 23, 24 ... 30 12 None of these 14 30 12 None of these 14 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP None of these
Number System If the sum of five consecutive even numbers A, B, C, D and E is 130, what is the product of A and E ? 660 840 720 780 660 840 720 780 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the consecutive even numbers be A = 2x, B = 2x + 2, C = 2x + 4, D = 2x + 6 and E = 2x + 8= A + B + C + D + E = 130= 10x + 20 = 130∴ x = 130 - 20/10 = 11Therefore, product of A and E= 22 x 30 = 660
Number System When the square of a number is substracted from (68)², the answer so obtained is 2508. What is the number ? 44 45 46 47 44 45 46 47 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (68)² - x² = 2508Therefore, x² = 4624 = 2508Therefore, x = root of 2116 = 46
Number System Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers? 60, 20 64, 16 65, 15 62, 18 60, 20 64, 16 65, 15 62, 18 ANSWER DOWNLOAD EXAMIANS APP
Number System (12.11)2 + (?)2 = 732.2921 24.2 20.2 17.2 14.2 24.2 20.2 17.2 14.2 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 24.2
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