Number System The difference between 72% of a number and 49% of the same number is 575. What is 9% of that number ? 245 275 225 295 245 275 225 295 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the no. be x.Therefore, 72% of x - 49% of x = 575Therefore, (72 - 49)% of x = 575Therefore, 9% of x = 575/23 x 9 = 225
Number System Find the greatest four digit number which leaves respective remainders of 2 and 5 when divided by 15 and 24. 9565 None of these 9125 9974 9565 None of these 9125 9974 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Since the difference between the divisors and the respective remainders is not constant, back substitution is the convenient method. None of the given numbers is satisfying the condition.
Number System Which one of the following represents the sum of the first n even numbers? N2+ 1 N(N – 1) N2 N(N + 1) N2+ 1 N(N – 1) N2 N(N + 1) ANSWER EXPLANATION DOWNLOAD EXAMIANS APP N (N + 1)
Number System The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number? 240 295 360 270 240 295 360 270 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the smallest number be x.Then larger number = (x + 1365)x + 1365 = 6x + 15= 5x = 1350 x = 270Smaller number = 270.
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1200 1192 1092 1082 1200 1192 1092 1082 ANSWER DOWNLOAD EXAMIANS APP
Number System If the fraction 8/6, 7/5, 18/13, 9/5 and 7/11 are arranged in descending order of their values, which one will be the second ? 2/7 7/5 3/4 1/9 2/7 7/5 3/4 1/9 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 8/6 = 1. 333, 7/5 = 1.4, 18/13 = 1.3849/5 = 1.8 and 7/11 = 0.636Therefore, Descending order is 9/5 > 7/5 > 18/13 > 8/6 > 7/11Therefore Second fraction is 7/5
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