ICSE Class 10 Maths Sum Of N Terms Of An A.P.
Sample Q&A
- If the ratio of the sum of two A.P is 5n+4:9n+6,then the ratio of the 18th term of those A.P is=?
- Find five numbers in A.P whose sum is 12 and the ratio of the first to the last terms is 2:3.
- If the sum of first 20 terms of an A.P. is same as the sum of its first 28 terms,find the sum of its 48 terms
- What is the sum of n terms of a series whose mth term is 2^m + 2m?
- If the sum of n terms of an AP is 3n^2+2n, find its r^th term.
- If sum of m terms of an AP is n and sum of n terms of an AP is m, show that the sum of (m+n) terms of the AP is -(m+n)
- The sum of n terms of a sequence is an^2+bn , show that the sequence is an AP.
- Is S1=sum of n terms, S2=sum of 2n terms and S3=sum of 3n terms of an AP. SHOW THAT S3=3(S2-S1)
- find the sum of the first 24 terms of A.P., if it is known that - 1st term + 5th term + 10th term + 15th term + 20th term + 24th term =225
- The p the term of an AP is 20 and its q th term is 10. Show that the sum of its first (p+q) terms is (p+q)/2 {30+10/(p-q)}
Take Test
Topic Completion
(60%)Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change