((10.3 10.3 10.3+1)/(10.3 10.3-10.3+1) ) is equal to::

ABC26GN0781 · Decimal Fractions

Subject: General Aptitude · Chapter: Decimal Fractions · Exam: 2004 · Marks: · Difficulty:

$\left(\frac{10.3 \times 10.3 \times 10.3+1}{10.3 \times 10.3-10.3+1}\right)$ is equal to::

(a)9.3

(b)10.3

(c)11.3

(d)12.3

Answer

Answer (as printed): C

Explanation

Given expression $=\frac{(10.3)^{3}+(1)^{3}}{(10.3)^{2}-(10.3 \times 1)+(1)^{2}}=\left(\frac{a^{3}+b^{3}}{a^{2}-a b+b^{2}}\right)$ $$=(a+b)=(10.3+1)=11.3 .$$

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

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