Find A12 Of The Sequence 3,1-1,-3

Find a12 of the sequence 3,1-1,-3

 

ANSWER :

The 12th term is -19.

STEP BY STEP EXPLANATION :

An = A1 + (n - 1) × d

A12 = 3 + (12 - 1) × (1 - 3)

A12 = 3 + 11 × (-2)

A12 = 3 + (-22)

A12 = 3 - 22

A12 = -19

Therefore , the 12th term is -19.

OK.