If the term 7th of an A.P are 18 and 30 respectively.find the 13th term
sorry - fix your typo, then we can get somewhere.
To find the 13th term of an arithmetic progression (A.P.) when the 7th term and 1st term are given, you can use the following steps:
Step 1: Identify the given information:
- The term "7th of an A.P." means the 7th term of the arithmetic progression.
- The 7th term is 18.
- The 1st term (which is not explicitly mentioned) is needed to find the common difference.
Step 2: Find the common difference (d):
Given that the 7th term in an A.P. is 18, we can use this information along with the formula for the nth term of an A.P. to find the common difference (d).
The formula for the nth term of an A.P. is:
nth term = a + (n - 1)d
Substituting the values we know:
18 = a + (7 - 1)d
Step 3: Solve for d:
18 = a + 6d --> Equation 1
To solve for d, we need the value of the 1st term (a). Since it is not mentioned explicitly, we cannot proceed further unless we know either the 1st term or the common difference.
Therefore, based on the given information, it is not possible to find the 13th term of the A.P. accurately without the value of the 1st term or the common difference.