Sum of First n Terms of AP
Sum of First n Terms
Sum of N Terms of an AP: The sum of n terms when the AP is given
When l = Last term up to which the sum of A.P. is to find
For Example: Find the sum of first 10 terms of the given AP 34+ 37+ 40+....
Solution:
Substituting thevalue of 'a' and 'd ' and n in
If the sum of first n terms of an AP is n(3n + 7) , then its 10th term is ________ | |||
| Right Option : C | |||
| View Explanation | |||
An AP series which has 20 terms has the First term and the last term 5 and 158 respectively. What is the sum of its 9th and the 12th term? | |||
| Right Option : A | |||
| View Explanation | |||
The 10th term ana AP whose 1st term and the common difference are 3 and 4,respectively is ________________________ | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
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