Q: Which number should come next in the following sequence 243-81-27-9?

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18

A single number, such as 364758 does not describe a sequence, nor a series.

Consecutive terms in the sequence are being divided by -2. Therefore, -1 / -2 = 1/2 or 0.5.

a four number sequence is the easiest and longest number sequence to remember.

44. You're adding 11 then 9 each time !

The sequence indicates that one number is added to the previous number to find the value of the next number. Example 1 (+0) - 1 (+1) - 2 (+1) - 3 (+2) - 5 (+3) - 8 (+5) - 13. The next number in the sequence would be 21 (13 + 8).

What should be the next number in the following series? 100 96 104 88 120 56

The next number is 25 but there are the sequence is infinite so there can be no end to the sequence.

13

Whatever you like. One single number, as you have in the question, does not define a sequence.

the answer should be 5

56

It appears the sequence is of numbers in descending order followied by the number 8: 9(8)8(8)7(8)6(?), therefore, if the sequence is true, the number six should be followed by the number 8.

41 should be in between 14 and 122

The answer depends on where, within the sequence, the missing number should have been.

In this sequence, it should be 27, not 28 (28 is not divisible by 3)

64 should be in between 27 and 125.

If the last number is 1/3 (it should be), the next number is 5 and 1/3

The next number in this sequence should be 33.

The next number in the sequence 100,96,104,88,120,56 is 184.The pattern is minus 4, plus 8, minus 16, plus 32, minus 64, plus 128

sequence a great game!it fun and, i think you should read it.

24. It should be 32 which is double of 16

A single number, such as 12848384 does not make a series.

That's the way it is defined. And it's defined that way to maintain consistency in different properties of numbers. However, the following argument makes it look reasonable, at least. Let's assume it is already given that a positive number times a negative number is negative. (If this doesn't sound reasonable to you, please ask a separate question.)Now consider the following sequence:-10 x 3 = -30-10 x 2 = -20-10 x 1 = -10-10 x 0 = 0-10 x -1 = ...Now consider the question: What number should you fill in to complete the sequence? The left number in each multiplication is constant, the middle number decreases by one at a time. The rightmost column obviously obviously increases by 10 at a time; if you continue the sequence, you inevitably get 10 - a positive number. Similarly, you get positive numbers if you replace the sequence with any other combination of numbers, such that the first number is negative, and the second number decreases at a constant rate.

0 + 2 + 3 = 5 2 + 3 + 5 = 10 3 + 5 + 10 = 18 5 + 10 + 18 = 33

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