Average of five consecutive odd integers is 27 . product of first and last number?

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The average of five consecutive odd integers is $27 .$ What is the product of the first and the last number?

A

$621$

B

$667$

C

$713$

D

$725$

Solution

Average of five consecutive odd number is $3^{\text {rd}}$ number $=27$

$\therefore 1^{\text {st }}$ Number $=23$

$5^{\text {th }}$ Number $=31$

Product $=23 \times 31=713$

Standard 13

Quantitative Aptitude

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