Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 75 91 89 35 75 91 89 35 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System 35%of ?=242 394 487 542 693 394 487 542 693 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System Sum of square of first number and cube of second number together is 568. Also square of the second number is 15 less than square of 8. What is the value of three-fifth of the first number ? 8 7 9 6 8 7 9 6 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the first number be x and the second number be y.∴ y² = 82 - 15 = 64 - 15 = 49∴ y = 7∴ x² + 73 = 568= x² + 343 = 568= x² + 568 - 343 = 225∴ x = √225 = 15∴ 15 x 3/5 = 9
Number System If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is: 88 44 40 80 88 44 40 80 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Let the numbers be x and y. Then, (x + y) = 22 and x2 + y2 = 404 Now, 2xy = (x + y)2 - (x2 + y2) 2xy= 222 - 404 = 484 - 404 = 80xy = 40
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? 23 65 78 34 23 65 78 34 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 65
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