Number System The number of prime factors of (6)10×(7)17×(55)27 101 41 61 91 101 41 61 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 91
Number System The difference between a two-digit number and the number obtained by interchange the two digits of the number is 27. If the sum of the two digits of the number is 13, what is their product ? 39 40 38 37 39 40 38 37 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10x + y.∴ 10x + y - (10y + x) = 27or 9x - 9y = 27∴ x - y = 3 .......(I)x + y = 13 .......(II)From eqn (I) and (II)x = 8 and y = 5.So the number = 85Therefore, product = 8 x 5 = 40
Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 91 75 89 35 91 75 89 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System 148 x 3.75 x 4 = 111 x ? 17 19 24 20 17 19 24 20 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 148 x 3.75 x 4/111 = 20
Number System Three numbers are in ratio of 3: 4 :5. If the sum of first & third numbers is more than second number by 52, which will be largest number? 65 23 34 78 65 23 34 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65
Number System Two numbers are in the ratio 3:5. If 9 be subtracted from each, they are in the ratio of 9:17. The first number is: 18 36 27 30 18 36 27 30 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP (3x-9):(5x-9) = 9:17 x = 12 => 3x = 36
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