for an A.P if a=10 and d=5 then find t3 and t4
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Answer:
Given a=10
d=5
when first term i.e a is given and common difference d is given then a+(n-1)d
so in case of t3,n=3
a+2d
10+2(5)
10+10=20
T4 =n=4
a+3d
10 +3(5)
10+15
25
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