Number System If the sum of four consecutive numbers is 370, which the following is the third lowest number among them 90 91 89 92 90 91 89 92 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the four consecutive numbers be x, (x + 1), (x + 2), (x + 3) thenx + (x + 1) + (x + 2) + (x + 3) = 370= 4x + 6 = 370∴ x = 364/4 = 91∴ third lowest number among them = x + 1= 91 + 1 = 92
Number System Find the least number when successively divided by 2, 3 and 7 leaves remainders 1, 2 and 3 respectively? 75 61 67 65 75 61 67 65 ANSWER DOWNLOAD EXAMIANS APP
Number System If the fractions8/5,7/2,9/5,5/4,4/5 are arranged in descending order of their values, which one will be fourth? 7/9 5/4 11/13 1/3 7/9 5/4 11/13 1/3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 5/4
Number System Supply the missing figure : 2, 6, 12, 20, 30 ... 56 42 40 41 39 42 40 41 39 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 42
Number System The sum of the digits of a two-digit number is 12, and the difference between the number and the number obtained by interchanging the two digits of the number is 18. Find the number. 50 75 25 12.5 50 75 25 12.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ x + y = 12 ...........(i)10x + y - (10x + x) = 18or 10x + y - 10y - x = 18or 9x - 9y = 18∴ x - y = 2From (i) and (ii), x = 7, y = 5∴ Number = 75
Number System On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: 47649 48619 47719 47619 47649 48619 47719 47619 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP By hit and trail, we find that47619 * 7 = 333333.7) 333333 (47619 333333---------------- 0
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