Question

find the 21st term of ap whose first 2 terms are -3 And -4​

Answer 1

Answer:

its -23

Step-by-step explanation:

-3,-4,..........

a= -3

d= -4 - [-3] = -4 + 3 = -1

= a+[n-1]d

= -3 + [21-1]-1

= -3 + [-20]

= -3-20  = -23