Q3 What is the common difference of an AP
in which a²¹-a⁷ = 84 ?
Answers
Answered by
20
Step-by-step explanation:
a+ 20d = a21
a+ 6d= a7
a+20d-a-6d = 84
14d = 84
d= 6
Answered by
1
Answer:
Step-by-step explanation:
a+ 20d = a21
a+ 6d= a7
a+20d-a-6d = 84
14d = 84
d= 6
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