Number System What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12 7 2 9 3 7 2 9 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 9
Number System The product of two natural numbers is 17. Then, the sum of the reciprocals of their squares is: 289/290 289 1/289 290/289 289/290 289 1/289 290/289 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be a and b. Then,ab = 17, a = 1 and b = 17So, 1/a2 + 1/b2 = (a2 + b2)/a2 b2 = (12 + 172)/(1 * 17)2 = 290/289
Number System The sum of the digits of a two digit number is 12. If the new number formed by reversing the digits is greater than the original number by 54, then what will be the original number? 39 49 59 69 39 49 59 69 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39
Number System In how many different ways can the letters of the word "MOBILIZE" be arranged ? 18456 17453 20160 19765 18456 17453 20160 19765 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The word MOBILIZE has eight letters in which I comes twice ∴ Number of arrangements = 8!/2! = 20160
Number System Complete the series : 1, 8, 27, 64, 125, 216 ..... 343 363 373 353 343 363 373 353 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 343
Number System The sum of two numbers is 25 and their difference is 13. Find their product. 315 114 104 325 315 114 104 325 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then x + y = 25 and x - y = 13.x = 19; y = 6xy = 19 * 6 = 114
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