Question
Mathematics Question on Arithmetic Progression
If the 10th and 12th terms of an A.P. are respectively 15 and 21, then the common difference of the A.P. is
A
-6
B
4
C
6
D
-3
E
3
Answer
3
Explanation
Solution
The correct option is (E): 3
If the 10th and 12th terms of an A.P. are respectively 15 and 21, then the common difference of the A.P. is
-6
4
6
-3
3
3
The correct option is (E): 3