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What is the common ratio of 64, 16, 4, 1?

User Pille
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2 Answers

4 votes

Answer: The common ratio for the given sequence is
(1)/(4).

Step-by-step explanation: We are given to find the common ratio for the following sequence:


64,~16,~4,~1,~.~.~..

We can see that

the given sequence is a geometric sequence with first term, a = 64.

We know that the common ratio 'r' of a geometric sequence will be found by diving each term by its preceding term.

We have


(16)/(64)=(4)/(16)=(1)/(4)=~.~.~.~=(1)/(4).

Thus, the common ratio for the given sequence is
(1)/(4).

User Weizer
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The given numbers in the sequence projects a geometric sequence with a common ratio of 1/4. This is true because 64 *1/4 equals 16 and 16 * 1/4 equals 4. Furthermore, 4 * 1/4 is equal to 1. hence the answer is 1/4
User Waley Chen
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