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Question

What is the 5th term from the end of the AP 2, 7, 12, ..., 47?
 


Solution

AP 2, 7, 12, ..., 47

a = 47

last term , l = 47

d =  7 - 2 = 5

We know nth term from the end,

an=l(n1)da5=47(51)5=474×5=4720=27

5th term from the end is 27


Mathematics
Secondary School Mathematics X
Standard X

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