Number System What should come in place of (?) in the following series ? 10, 19, 30, 43, 58, ? 75 76 77 78 75 76 77 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The series is: +9, +11, +13, +15, +17
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? 69 59 49 39 69 59 49 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 39
Number System The difference between 78% of a number and 59% of the same number is 323. What is 62% of that number ? Rs. 945 Rs. 1054 Rs. 986 Rs. 926 Rs. 945 Rs. 1054 Rs. 986 Rs. 926 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be x.78% of x - 59% of x = 323= 78x - 59x/100 = 323= 19x/100 = 323∴ x = 323 x 100/19 = 1700= 62% of 1700 = 1700 x 62/100 = 1054
Number System Complete the series : 11, 12, 17, 18, 23, 24 ... 12 30 14 None of these 12 30 14 None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP None of these
Number System In a pair of fractions, fraction A is twice the fraction B and the product of two fractions is 2/25. What is the value of fraction A? 1/25 1/5 Data inadequate 2/5 1/25 1/5 Data inadequate 2/5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP A = 2B => B = 1/2 A, so, AB = 2/25 1/2 A2 = 2/25A2 = 4/25 A = 2/5
Number System How many times the keys of a typewriter have to be pressed in order to write first 400 counting numbers? 1200 1092 1192 1082 1200 1092 1192 1082 ANSWER DOWNLOAD EXAMIANS APP
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