How many terms are there in the AP 7,11,15,...139
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A=7
D=11-7=4
Formula an=a+(n-1)d
139=7+(n-1)4
132/4=n-1
44=n-1
44+1=n
N=45
There are 45 terms
D=11-7=4
Formula an=a+(n-1)d
139=7+(n-1)4
132/4=n-1
44=n-1
44+1=n
N=45
There are 45 terms
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