ples answer this quickly
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Answers
Answered by
1
Answer:
50
Step-by-step explanation:
a=3
a2=8
d=a2-a1
8-3=5
a30=a+29d
=3+29*5
=3+145=148
a20=a+19d
=3+19*5
=3+95=98
A/q
(a30-a20)
=(148-98)=50
Ans.50
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