Number System 5525 ÷ 17 = √? 93025 112225 99225 105625 93025 112225 99225 105625 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √? = 5525/17 = 325∴ ? = (325)² = 105625
Number System In how many different ways can the letters of word "COLLEGE" be arranged ? 1300 1280 1240 1260 1300 1280 1240 1260 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Number of ways = 7!/2!2! = 1260(∵ L and E come twice)
Number System If the numerator of a fraction is decreased by 12.5% and the denominator is increased by 180% the resultant fraction is 1/2. What is the original fraction ? 8/5 1/5 3/5 7/5 8/5 1/5 3/5 7/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the original fraction be x/y.∴ x x 87.5/100/y x 280/100 = 1/2or 87.5x/280y = 1/2∴ 175x = 280y∴ x/y = 280/175 = 8/5
Number System If 4 2/3 is subtracted form 10 1/2 and the difference is multiplied by 450, then what is the final answer? 2675 2875 2725 None of these 2675 2875 2725 None of these ANSWER DOWNLOAD EXAMIANS APP
Number System The product of two consecutive position odd numbers is 6723. What is the smaller number? 74 79 71 83 74 79 71 83 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP n x (n + 2) = 6723= n² + 2n - 6723 = 0= n² + 83n - 81n - 6723 = 0= n(n + 83) - 81 (n + 83) = 0Therefore, (n - 81) (n + 83) = 0Therefore, n = 81, n + 2 = 83
Number System Complete the series : 81, 69, 58, 48, 39 ........ 31 28 29 30 31 28 29 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 31
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