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Aptitude Decimal Fraction Test Paper 521) Three of the following four options (a), (b), (c), and (d) are exactly equal. Which option is not equal to the other three options?
Answer: B Explanation: Convert all the fractions in the decimal numbers Clearly, we can say that option B has a different value from the other three options. 22) The value of (0.333...) * (0.444....) is
Answer: D Explanation: We can write (0.3333....) = 0.3̅ 23) The value of the expression [(0.05)2 + (0.41)2 + (0.073)2]/ [(0.005)2 + (0.041)2 +(0.0073)2] is
Answer: A Explanation: The expression is [(0.05)2 + (0.41)2 + (0.073)2]/ [(0.005)2 + (0.041)2 + (0.0073)2] Or, [(0.05)2 + (0.41)2 + (0.073)2]/ [(0.05/10)2 + (0.41/10)2 + (0.073/10)2] Or, [(0.05)2 + (0.41)2 + (0.073)2]/ [(0.05)2+ (0.41)2 + (0.073)2] *(1/100) We know that x/y/100 = x*100/ y Similarly, [(0.05)2 + (0.41)2 + (0.073)2] * 100/ [(0.05)22 + (0.41)2 + (0.073)2] Now, the numerator and denominator have the same value, so, they will cancel out each other. Hence, the value of the expression will be 100. 24) The value of [(0.43)3 + (1.47)3 + (1.1)3 - 3*0.43*1.47*1.1]/ [(0.43) 2 + (1.47) 2+ (1.1) 2 - 0.43*1.43 - 0.43*1.1 - 1.47*1.1] is
Answer: D Explanation: We know that [a3 + b3 + c3 - 3abc]/ [a 2 + b 2 + c 2 -ab- bc-ca] = [a+b+c] Aptitude Decimal Fraction Test Paper 1 Aptitude Decimal Fraction Test Paper 2 Aptitude Decimal Fraction Test Paper 3 Aptitude Decimal Fraction Test Paper 4 Decimal Fraction Concepts
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