106 × 106-94 × 94= ? · ABC26GN0178

Subject: General Aptitude · Chapter: Number System

$106 \times 106-94 \times 94=$ ?

(a)2400

(b)2000

(c)1904

(d)1906

(e)None of these

Answer

Answer (as printed): A

Explanation

$$\begin{aligned} & (106 \times 106-94 \times 94)=(106)^{2}-(94)^{2} \\ & =(106+94)(106-94)=(200 \times 12)=2400 . \end{aligned}$$

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

Study loop for Number System