Which term of an AP is 70, if the first term is 120and the common difference is -5?
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using formula an=a+(n-1)d
70 = 120+(n-1)-5
-50=(n-1)-5
10=n-1
11=n=answer
70 = 120+(n-1)-5
-50=(n-1)-5
10=n-1
11=n=answer
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