Question

The sun of 6th term and 10th term of an arithmetic sequance is 66.
What is the sum of first and 15th term of this sequance.

Answer 1

Answer:

Sum of 1st and 15th term is 66.

Step-by-step explanation:

Given,

$a_{6}+a_{10}=66$

$a+5d +a+9d=66$

$a+a+14d=66$

$a_{1}+a_{15} =66$

∴ Sum of 1st and 15th term is 66.