Well, isn't that a happy little sequence of numbers! If we take a closer look, we can see that each number is decreasing by a certain amount. In this case, it looks like we're subtracting 3, then 6, then 12. So, if we continue this pattern, the next number would be 45 - 24, which equals 21. And there you have it, a beautiful progression of numbers just waiting to be discovered!
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21. The number subtracted doubles in each succession... 63 is 3 less than 66... 57 is 6 less than 63... 45 is 12 less than 57. So 21 is 24 less than 45.
57
The next number is 49+8 = 57
The pattern is add three and then multiply by three. The next number is 174.
174 =============== 18 = 15+3 54 = 18x3 57 = 54+3 171= 57x3 174= 171+3
The difference between one number and the next in the sequence is decreasing by 9 each time. Therefore, the difference between -4 and the next number will be equal to 62 - 9 = 53. The next number is therefore equal to -4 - 53 = -57.