Question

last term of series 27+24+21+18+...... is 0 find number of terms

Answer 1

the number of terms in a given series are 10

Answer 2

a=27
l=0
d= -3
tn=a+(n-1)d
0= 27+(n-1)(-3)
-27/-3=n-1
9=n-1
n=10

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