if the second term of an ap 13 and 4th term 3.find the third term
Answers
Answered by
3
Answer:8
Step-by-step explanation:
third term = (second term+fourth term)/2
=(13+3)/2
=16/2
=8
Answered by
4
Step-by-step explanation:
an= a +(n-1)d
a2=a+(2-1)d
13=a+d
a=13-d
a4= a+(4-1)d
3=a+3d
putting a=13-d
3=13-d+3d
3-13=2d
2d=10
d=5
a=13-5
a=8
a3= 8+(3-1)5
a3=8+2*5
a3=8+10
a3=18
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