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13,17,21,... Find the 43rd term.

User Embarus
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1 Answer

1 vote

Answer:

a₄₃ = 181

Explanation:

there is a common difference between consecutive terms in the sequence, that is

17 - 13 = 21 - 17 = 4

this indicates the sequence is arithmetic with nth term


a_(n) = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

here a₁ = 13 and d = 4 , then

a₄₃ = 13 + (42 × 4) = 13 + 168 = 181

User Gvgvgvijayan
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