Find Sum of N Terms When A.P. and Last Term is Given
Find Sum of N Terms When A.P. and Last Term is Given
Sum of N Terms When First Term, Last Term is Given: The sum can be found by using the formula.
For using this formula we will first find the number of terms
Example : Find the sum for the given A.P. 34+ 32+ 30+....+10
Solution: Here, the last term is given. We will first have to find the number of terms.
Using We have
If the last term , the numbers of terms and the sum of all the terms of an AP are 53, 17, 493 respectively. Then its first term is ________________ | |||
| Right Option : B | |||
| View Explanation | |||
If the last term, number of terms and the sum of all the terms of an AP are 152, 31 and 2387 respectively, its first term is ________________- | |||
| Right Option : A | |||
| View Explanation | |||
Which the following values is the sum of the AP : 3, 0, -3, -6, -9, ....... -27? | |||
| Right Option : C | |||
| View Explanation | |||
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