2 years ago

If a1=6 and a5=12, what does a3=?

1 answer:

4 0

a3=9

assuming the pattern is constant, a3 is right in the middle of a1 and a5 so the answer would be right in the middle of 6 and 12. the average of 6 and 12 is 9, so a3=9.

hope this helps!

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