Number System The difference between 71% of a number and 46% and of the same number is 212. What is 75% of that number 636 724 845 673 636 724 845 673 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.∴ 71% of x - 46% of x = 212∴ (71 - 46)% of x = 212∴ 25/100 x x = 212∴ x = 212 x 4 = 848∴ 75% of 848 = 848 x 75/100 = 636
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 Find the smallest number which when divided by 13 and 16 leaves respective remainders of 2 and 5. 207 187 219 197 207 187 219 197 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let 'N' is the smallest number which divided by 13 and 16 leaves respective remainders of 2 and 5.Required number = (LCM of 13 and 16) - (common difference of divisors and remainders) = (208) - (11) = 197.
Number System The product of two consecutive odd numbers is 4623. What is the product of the next two consecutive odd numbers ? 7745 6782 5183 8795 7745 6782 5183 8795 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP √4623 = 6767 x 69 = 4623∴ Required product = 71 x 73 = 5183
Number System What least number should be added to 8602 to make it a perfect square ? 41 47 51 36 41 47 51 36 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP So, (93)² = 8649So, the required number to be added to make a perfect square = 8649 - 8602 = 47
Number System {(742)² ÷ 36} ÷ 2 = ? 420.5 423.5 421.5 422.5 420.5 423.5 421.5 422.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = (174 x 174/36) ÷ 2 = 841/2 = 420.5
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