In a AP if T3 = 13 and T8 = 28 Find:- S10
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Answered by
0
Step-by-step explanation:
T3=a+2d=13.................i
T8=a+7d=28.................ii
subtracting equation i from ii
d=3
substituting value of d=3 in eq.i
a+ 2 ×3=13
a=13-6
a=7
Answered by
1
Answer:
S10 = 205
Step-by-step explanation:
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