If the common of an AP is 3 then find t20- t15
Answers
Answered by
0
Answer:
t+19d-t-14d
19d-14d
d(19-14)
3*5
15
Answered by
1
Answer:
a+19d-(a+14d)
a+19d-a-14d
19d-14d
5d
5*3
15
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