For an AP the first term is 7, the common difference is 5 and the n th term is 67 . which of the following numbers represents the value of n ?
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Answered by
1
Answer:
13
Step-by-step explanation:
a=7
d=5
an=67
now,
an=a+(n-1)d
67=7+(n-1)5
67-7=n-1×5
60÷5=n-1
12=n-1
n=13
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