Number System What should come in the place of question mark (?) in the number series given below? 158 159 157 160 158 159 157 160 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 160
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 36 54 None of these 14 36 54 None of these 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
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 ? 18 28 22 24 18 28 22 24 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 35%of ?=242 693 487 394 542 693 487 394 542 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 693
Number System Four-fifth of a number is 10 more than two-third of the same number. What is the number? 35 89 75 91 35 89 75 91 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP 75
Number System The sum and the product of two numbers are 25 and 144 respectively, the difference of the number is? 11 5 7 3 11 5 7 3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP x + y = 25xy = 144(x- y)2 = (x + y)2 – 4xy(x- y)2 = 625 – 576 => (x – y) = 7
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