SOLUTION: Which term is the number 136 in the sequence 1, 6, 11, 16, 21?

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Question 431938: Which term is the number 136 in the sequence 1, 6, 11, 16, 21?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Arithmetic Sequence: {1,6,11,16,21,...} d = 5

a%5Bn%5D=a%5B1%5D%2B%28n-1%29%2Ad

a%5Bn%5D=+1%2B%28n-1%29%2A5+=+136

     1 + 5n-5 = 136

        5n = 140

         n = 28  28th term is 136



CHECKING our Answer***

a%5B28%5D=+1+%2B%2827%29%2A5+=+136