Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.	A student was asked to find the arithmetic mean of the following 12 numbers :3, 11, 7, 9, 15, 13, 8, 19, 17,21, 14 and x .He found the mean to be 12.The value of x will be:1). 32). 73). 174). 31
Answer» mean= TOTAL SUM / n $12 = \FRAC{(3+11+7+9+15+13+8+19+17+21+14+x)}{12}$ $137+x=144$ $x=7$

A student was asked to find the arithmetic mean of the following 12 numbers :3, 11, 7, 9, 15, 13, 8, 19, 17,21, 14 and x .He found the mean to be 12.The value of x will be:1). 32). 73). 174). 31

Answer»

mean= TOTAL SUM / n

$12 = \FRAC{(3+11+7+9+15+13+8+19+17+21+14+x)}{12}$

$137+x=144$

$x=7$

Discussion