Question
Mathematics Question on Arithmetic Mean
The arithmetic mean of a-3d, a- d, a+d and a + 3d is
A
a
B
d
C
2a
D
2d
Answer
a
Explanation
Solution
The correct answer is option (A):a
The arithmetic mean of a-3d, a- d, a+d and a + 3d is
a
d
2a
2d
a
The correct answer is option (A):a