common difference of an arithmetic progression is 3 and find a20 - a15
Asked by Kapil | 20th Oct, 2017, 09:59: AM
We know that the common difference is given as '3'.
Let 'd' be the common difference, 'a' be the first term, so the nth term is written as
We will have to find
Applying the formula, the above expression becomes,
(a+19d) - (a+14d)
= a + 19d - a - 14d
This finally becomes
5 x 3
Answered by | 14th Dec, 2017, 05:13: PM
- if 2x, x+10, 3x+2 are the consecutive terms of ap for the value x
- The sequence root3, root 6, root 9, root 12, form an arithmetic progression? Give reason.
- what are Ap
- what is mean
- If two distinct natural numbers have a Geometric Mean of 7, find their Arithmetic Mean.
- Eg4 please...Why are 'means' taken as a-d,a+d and not the other two?
- What is the common difference of the arithmetic sequence 17,15,13.......
- Which of the following are A.P's? If they form an AP, find the common difference d. (1) 4, 0, -4, -8, -12, ... (2) -2, 0, 2, 5, 8, 10, ...
- Write the next two terms of the following AP: ……….
- Write first term and common difference for the following AP'S
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number