Question

1) If in an A.P, d = 4 then t20 – t10 =_____

A)-40
B) 5
C) 40
D) -5​

Answer 1

c is the answer

Step-by-step explanation:

a+19d-a-9d ( a+(n-1) d)

10d=10*4=40

Answer 2

Answer:

if in an a.p d=4the T20_t15=?