Question

The mean of first three terms is 14 and mean of next two terms is 18. The mean of all the five terms is

• A. 14.5
• B. 15
• C. 15.2
• D. 15.6

Answer 1

The correct option is D 15.6

Mean of all the terms= $\frac{3\times 14+2\times 18}{5}$
$=\frac{42+36}{5}=\frac{78}{5}=15.6$