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06-05-2020
Mathematics

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Find the 91st term of the arithmetic sequence 4,6,8

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06-05-2020

Answer:

184

Step-by-step explanation:

Find the common difference first d = 6 - 4 = 2

first term a_1 = 4

a_n = (n -1)*d + a_1

a_91 = (91 - 1) * 2 + 4

a_91 is the 91st term:

a_91 = 90*2 + 4

a_91 = 180 + 4 = 184

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