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 1st term is equal to the common difference and the 2nd term is 10, the sum of 1st 20 terms is ____________________ | |||
| Right Option : C | |||
| View Explanation | |||
If | |||
| Right Option : A | |||
| View Explanation | |||
If the sum and the product of 1st 3 terms of an AP Series is 42 and 2240 respectively, what are the terms of the series? | |||
| Right Option : B | |||
| View Explanation | |||
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