Number System If a number is subtracted from its square we get 272. Find the number? 24 17 14 22 24 17 14 22 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x2 – x = 272 => x =17
Number System 35 + 15 * 1.5 = ? 75 5.25 51.5 57.5 75 5.25 51.5 57.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Given Exp. = 35 + 15 * 3/2 = 35 + 45/2 = 35 + 22.5 = 57.5
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 ? 780 840 720 660 780 840 720 660 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 (12)² - (4.4)² - (0.04)² = ? 129.6384 131.6384 125.6384 124.6384 129.6384 131.6384 125.6384 124.6384 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (12)² - (4.4)² - (0.04)²= 144 - 19.36 - 0.0016= 124.64 - 0.0016= 124.6384
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1260 1240 1280 1300 1260 1240 1280 1300 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System Find the number of factors of 300 excluding 1 and itself. 14 15 18 16 14 15 18 16 ANSWER DOWNLOAD EXAMIANS APP
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