Question

the 31st term of the progression 1, -3, -7, -11, ....... is_​

Answer 1

Answer:

this series name is AP and 31st term is -119

Explanation:

t31 = a+(n-1)d

= 1+(31-1)-4 where d=-3-1=-4

=1+30×-4

=1-120

=-119