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# 12 31 25 51 49 What is the next number?

Updated: 4/28/2022

Wiki User

14y ago

113

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I contend the correct answer is not 113 but:

82

Looking at the first digit of each number from one to the next...

1 3 2 5 4

this pattern emerges:

+2 -1 +3 -1 next number in series first digit will accomodate +4, first digit will be 8

Looking at each pair of each numbers digits...

1 2 | 3 1 | 2 5 | 5 1 | 4 9

this pattern emerges in the difference between the two digits of each number:

-1 +2 -3 +4 -5 next number pair in series will accomodate +6 = 82

Wiki User

14y ago

Todd Holtz

Lvl 2
3y ago

12

Leonor Del valle

Lvl 2
3y ago

82

Anonymous

Lvl 1
3y ago

80

Earn +20 pts
Q: 12 31 25 51 49 What is the next number?
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### The sum of twice a number and 7 less than the number is the same as the difference between negative 31 and the number what is the number?

2n + (n - 7) = -31 - n3n - 7 = -31 - n3n + n + 7 - 7 = -31 + 7 + n - n4n = -244n/4 = -24/4n = -6Check:2n + (n - 7) = -31 - n2(-6) + [(-6) - 7) =? -31 - (-6)-12 + [-6 + (-7)] =? -31 + 6-12 + (-13) =? -25-25 = -25 True

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The next number in this sequence is 200.

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