Question

If 6th term of an AP is -10 & its 10th term is -26, then the find the 15th term of an AP

Answer 1

Make two linear equations in 2 variables by using the given data

Solve the equations to get the value of common difference

And u can get the value of first term by substituting the value of d in the equation

Then by using a and d for nd the 15th term