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 34 23 78 65 34 23 78 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 3 5 7 11 3 5 7 11 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
Number System 486+32×25—59=? 567 528 596 582 567 528 596 582 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 528
Number System 732.96 + 405.38 - 604.08 - 105.44 + 222.86 = ? 631.68 621.68 651.68 641.68 631.68 621.68 651.68 641.68 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ? = 1361.20 - 709.52 = 651.68
Number System How many numbers between 300 and 800 can be by using digits 2, 4, 5, 6 and 0 ? 36 56 48 52 36 56 48 52 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP ∴ Reqd . numbers = 3 x 4P2 = 3 x 12 = 36
Number System The sum of the two digits of a two-digit number is 15 and the difference between the two digits of the two digit number is 3. What is the product of the two digits of the two digit number ? 14 None of these 36 54 14 None of these 36 54 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the number be 10 x + yWhere x > yAccording to the question,x + y = 15 and x - y = 3Solving both the equations,x = 9, y = 6∴ x x y = 9 x 6 = 54
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