which term of the AP 3,8,13,18..... will be 55 more than its 20th term?
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20th term = a+19d
a+19d+20=a+(n-1)d
19×5+20=(n-1)5
95+20=(n-1)5
115=(n-1)5
n-1=115/5
n-1=23
n=23+1=24
a+19d+20=a+(n-1)d
19×5+20=(n-1)5
95+20=(n-1)5
115=(n-1)5
n-1=115/5
n-1=23
n=23+1=24
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