Number System In a two-digit number, the digit in unit's place is two more than three times the digit in ten's place. If the sum of the two digits is 10, what is the number ? 22 24 18 28 22 24 18 28 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ y = 3x + 2 .......(i)And, x + y = 10 ......(ii)From (i) and (ii), x = 2, y = 8∴ Number = 28
Number System A certain number when divided by 45 leaves a remainder 31, what is the remainder if the same number be divided by 15? 13 9 11 1 13 9 11 1 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 45 + 31 = 76/15 = 1 (Remainder)
Number System What should come in place of the question mark (?) in the following number series ? 888 888 444 148 ? 7.4 29 33 35 37 29 33 35 37 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 888 ÷ 1 = 888888 ÷ 2 = 444444 ÷ 3 = 148148 ÷ 4 = 3737 ÷ 5 = 7.4
Number System 93296 - 45874 + 20382 - 56817 = ? 109887 109857 109867 109877 109887 109857 109867 109877 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 113678 - 102691 = 109887
Number System A certain number of two digits is three times the sum of its digits. If 45 be added to it, the digits are reversed. The number is: 22 27 30 24 22 27 30 24 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 27
Number System Sum of the digits number is 8 and their product is 12. Find the difference between the digits? 4 None 2 6 4 None 2 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 8xy = 12(x – y)2 = (x + y)2 – 4xy (x – y)2 = 64 – 48 => (x – y) = 4
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