Calculate the value of n in the following arithmetic sequence, 4; 9; 14….54
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Answer:
n=11
Step-by-step explanation:
an=54
a=4
d=a2-a1 = 9-4 = 5
an= a+(n-1)d
54 = 4+(n-1)5
50 = (n-1)5
10 = n-1
n=11
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