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Aptitude - Decimals & Fractions Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Decimals and Fractions. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Answer : A
Explanation
(0.34-0.24) / (0.32+0.22) => (a4-b4) / (a2+b2) = ( a2+b2)( a2-b2)/( a2+b2) = a2-b2 =(a+b)(a-b) = (0.3 +0.2)(0.3-0.2) = 0.05
Answer : B
Explanation
0.4442 + 0.6662 +0.8882 = 0.049284
Answer : D
Explanation
(0.72 +0.62 +0.52)/(0.072 +0.062 +0.052 )= (0.72 +0.62 +0.52)/0.12(0.72 +0.62 +0.52 ) = 1/.01 = 100
Q 4 - The sum of the numerator and denominator of a fraction is 15. If the numerator is increased by 5, the fraction becomes 1/4. Find the fraction.
Answer : B
Explanation
Let numerator be x denominator be y x+y=15... (1) (x+5)/y = 1/4 4(x+5) =y 4x+20 =y ... (2) Solving equation (1) & (2) we get x=7 y=8 the fraction is 7/8.
Answer : C
Explanation
0.6 0.66 0.066 6.606 ----- 7.932 -----
Answer : B
Explanation
Given expression is a2 + 2ab + b2 where a = 2.43, b = 7.57 = (a+b)2 = (2.43 + 7.57)2 = 102 = 100
Answer : C
Explanation
0.13 / x2 = 13 => 13x2 = 0.13 => x2 = 0.13/13 = 13/100 x 1/13 = 1/100 => x = 1/10 = .1
Answer : A
Explanation
As a3 + b3 = (a+b)(a2-ab + b2) Thus (a3 + b3) / (a2-ab + b2) = a + b ∴ (0.733 + 0.273) / (0.732 + 0.272 - 0.73 x 0.27) = 0.73 + 0.27 = 1
Answer : D
Explanation
number of pieces = 857/12.6 = 8570/126 = 68
aptitude_decimals.htm
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