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Find the common ratio of the geometric sequence with a first term of 8 and sixth term of 1944​

Sagot :

Answer: r = 3

a1 = 8

a6 = 1944

n = 6

r = ?

an = a1 r^n - 1

1944 = 8 r^6 - 1

1944 = 8 r^5

1944/8 = 8 r^5/8

243 = r^5

3 = r