which term of an A.P. is 70 , if the first term is 120 and the common difference -5?
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Answered by
1
Answer:
Step-by-step explanation:
an= 70
a= 120
d= - 5
an= 70 = a + (n-1) d
120 + (n-1) -5 =70
(n-1)=-50/-5
n=11
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