A, B, C and D are four consecutive even numbers respectively and their average is 65. What is the product of A and D?
A. 3968 B. 4092 C. 4216 D. 4352 Answer: Option CShow Answer
Solution(By Apex Team)
Let x, x + 2, x + 4 and x + 6 represent numbers A, B, C and D respectively.
Then,
$\begin{aligned}&\Rightarrow\frac{x+(x+2)+(x+4)+(x+6)}{4}=65\\
&\Rightarrow4x+12=260\\
&\Rightarrow4x=248\\
&\Rightarrow x=62\\
&\text{So,}\ A=62,B=64,C=66,D=68\\
&\therefore A\times D=62\times68=4216\end{aligned}$
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