Question

gejejejevrbrexuxhxjxjdbdbeve

Answer 1

a+(n-1)d=nth term
so a =4 d=-1-4=-5

Answer 2

Hi !

First term = a = 4
Common difference = d = -5
Last term = l = -106
No: of terms = n = ?

We know that,

l = a + (n- 1)d

-106 = 4 + ( n - 1)-5

-110 = ( n - 1) - 5

22 = n - 1

n = 23

There are 23 terms in the A.P..