ABC26GN0767 · Decimal Fractions

Subject: General Aptitude · Chapter: Decimal Fractions · Exam: · Marks: · Difficulty:

$\frac{(0.6)^{4}-(0.5)^{4}}{(0.6)^{2}+(0.5)^{2}}$ is equal to

(a)0.1

(b)0.11

(c)1.1

(d)11

Answer

Answer (as printed): B

Explanation

Given expression $= \frac{[(0.6)^2+(0.5)^2][(0.6)^2-(0.5)^2]}{(0.6)^2+(0.5)^2} = (0.6)^2-(0.5)^2 = (0.6+0.5)(0.6-0.5) = 1.1\times0.1 = 0.11$.

Explanation as extracted from the printed page; notation may be imperfect.