Which term of ap 3 8 13 is 248
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Which term of AP 3,8,13......248
Answered by admin @
Here
a=3 , d=8-3=5, an=248, n=?
an=a+(n-1)d
248=3+(n-1)×5
248-3=(n-1)×5
245=(n-1)×5
245÷5=n-1
49=n-1
n=49+1
n=50
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