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Q: What is the missing number in the sequence1 -2 -5 -26-677?

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15

The answer is 8 because 1+1=2, 1+2=3, 2+3=5,and 3+5=8.

If you fit the following cubic t(n) = (-n3 + 9n2 - 20n + 18)/3 where n = 1, 2, 3, ... then the next number is t(6) = 1

there is no missing number of 2 for 2 is already the exact unit there is no other number with the same amount though it may be shown in many ways they all mean 2

This missing number is 5

The missing number is 26. The number after 29 is 58.

2

Number missing (dividend) divided by 5 (divisor)= quotient need 2 of 3 numbers to solve for missing number

The first five prime numbers starting from 1 are 1, 2, 3, 5, 7. So 2 is the missing number.

2

62

2+2=

1 + 1 = 2 2 * 2 = 4 4 - 1 = 3 3 + 3 = 6 6 + 2 = 8 8 - 1 = 7 so you just repeat that .. meaning that the next number is 15

41.

The missing number is 49. This is why: 1 plus 2 equals 3, then 3 squared is 9. 2 plus 3 equals 5, then 5 squared is 25. Therefore, the missing number must be 49 to make the number sentence (3 plus 4 equals 7, then 7 squared is 49) true.

find the missing number 8-4-9 14-5-2 18-1-blank?

The number progression is n+prime numbers progressively increasing starting from 2. The missing number is 29.

2

The median is the middle number. If there is an odd number of numbers in the set, the median is the middle number, and the only way to find the missing number is if the median is the missing number. If there is an even number of numbers in the set, the median is the average of the two middle numbers, and the only way to find the missing number is if the median is one of those two numbers. If it is, you can take the median and the one of the two numbers you know. Use the formula (# +#)/2=median and solve.

I think 8

2

36

-8

2

The missing number is 5. They're the first five prime numbers.