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the rule is mutltiply by 3 and add 2... hope that helps.

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Q: The number that best fits 1 5 17 53 161?
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The number which best completes the sequence of 1 5 17 53 161?

1 + (4) = 5 5 + (4x3) = 17 17 + (4x3x3) = 53 53 + (4x3x3x3) = 161 161 + (4x3x3x3x3) = ?


The number that best completes the sequence of 1 5 17 53 161 is?

485


The number which best completes this sequence 1 5 17 53 161 is?

335


The number that best completes the sequence 1 5 17 53 161?

485


What is the number Wichita best completes the sequence 1 5 17 53 161?

Try: 161+324 = 485 would seem to fit the pattern


What is the number that best fits the sequence 2 9 5 13 10 19 17?

The next number is 27.


1 5 17 53 161 485?

Next number in the series is 145715(5-1) x 3 = 12 + 5 = 17,(17-5) x 3 = 36 + 17 = 53,(53-17)x 3 = 108 + 53 = 161,(161-53)x 3 = 324 + 161 = 485(485-161)x3= 972+485=1457


The number which best completes the sequence below is 1 5 17 53 161?

The answer is 485. The pattern is 3x+2 where x is the previous number. For example 3(1) + 2 = 5, 3(5) + 2 = 17, etc. So to figure out the next number you just multiply 3 by 161 and add 2 to get 485.


The number that completes the sequence 1 5 17 53 161?

The next number is 485.


What number is after 161 in this sequence 1-5-17-53-161?

As the sequence is going up, you multiply the previous number by 3 and add 2. Therefore, the next number in the sequence is equal to 161 x 3 + 2 = 425.


What is the next number in this sequence 1 5 17 53 161?

485


The number which best competes the sequence 1 5 17 53 161?

485 You arrive at 485 by multiplying the difference in the numbers by 3,and adding to the number.i.e 5 minus 1 = 4, 4 x 3 = 12 + 5 = 17, 12 x 3 = 36 + 17 = 53, 36 x 3 = 108 + 53 = 161, 108 x 3 = 324 + 161 = 485.