(i) If tn = a + (n - 1)d and a = 8, d = 4; then find the value of t4
sandhya60:
t4= A +3d so 8 +3×4=20
I know but my brother has taken the phone that's why i was unable to write this answer
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t4 equal to 20..
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Answer:
8+(n-1)4
=8+4n-4
=4n+4
=n 1,2,3....
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