The value of A30 - A20 for the A.P. 2, 7, 12, 17, ... (where A,n denotes the n-th
term of A.P.) is?
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Answered by
3
Answer:
150
Step-by-step explanation:
for AP a=2,d=5
A = a +(n-1)d.
A30= 2 + (30-1)5
=2+29×5
2+245
=247.
A20=2+(20-1)5
=2+19×5
=2+95
=97.
A30-A20 = 247-97
=150.
Answered by
1
Answer:
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