Explore topic-wise MCQs in Mathematics Questions and Answers.

This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Mathematics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

Find the mean deviation from mean of the observations: a, a+d, …., (a+2nd).

A. n(n + 1)d2/3
B. n(n + 1)d2/2
C. a + n(n + 1)d2/2
D. n(n + 1)d/(2n + 1)
Answer» E.
Discussion
2.

What is the geometric mean of 5,52, ….,5n?

A. 5n/2
B. 5(n+1)/2
C. 5n(n+1)/2
D. 5n
Answer» C. 5n(n+1)/2
Discussion