(55.25)²-637.5625= ? · ABC26GN0771

Subject: General Aptitude · Chapter: Decimal Fractions · Exam: Bank P.O. 2008

$(55.25)^{2}-637.5625=$ ?

(a)25.25

(b)625

(c)1375

(d)2415

(e)None of these

Answer

Answer (as printed): D

Explanation

Given expression $=(55.25)^{2}-(25.25)^{2}$ $$\begin{aligned} & =(55.25+25.25)(55.25-25.25) \\ & =80.5 \times 30=2415 . \end{aligned}$$

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

Study loop for Decimal Fractions