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Earn +20 ptsQ: What is the pattern to 6 21 66 201?
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What is the next number in the following recursive pattern 1 6 21 66 201?
606 is. Each term is derived by adding 3 to triple the previous term.
What is the pattern rule for 1-3-6-10-15?
21-28-36-45-55-66-74-87-101
4x plus 6 equals 21 plus 3x?
x = 15 as 4*15+6 = 66 3*15+21 = 66 or an easier way to do it 4x - 3x = 1x 21 - 6 = 15 1x = 15
Which times tables has 66 and 231?
Three 66 / 3 = 22 231 / 3 = 77 Eleven 66 / 11 = 6 231 / 11 = 21
What is the quotient of the sum of 21 and 45 and the difference of 63 and 52?
(21 + 45) / (63 - 52) = 66 / 11 = 6
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