Find the 21st term of the A.P. 7,11, 15, …….
Answers
Answered by
13
Answer:
87
Step-by-step explanation:
an=a+(n-1)d
an=7+(21-1)4
an=7+80
an=87
Answered by
2
ANSWER⬇️
given series is 7,11,15...139
here a=7
n=n
d=11-7→=4
an=a+(n-1)d
139=7+(n-1)4
139=7+4n-4
139=3+4n
136=4n
34=n
it is 34th term in series
I HOPE THIS WILL HELP U
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