- #1
dirk_mec1
- 761
- 13
Homework Statement
Fill in the dots:
83 80 84 83 88 95 ...
Pick one of the following answers: 95 91 83 87
Homework Equations
The Attempt at a Solution
84-83 = 1
88-84= 4
88 + 7 = 95 ?
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Good question. Does not appear to be ASCII or some other similar encoding. I know which answer I would pick, but it still has the con that it doesn't fit any simple pattern, and relies on an assumption about the overall pattern...jedishrfu said:Where did you find this problem?
Please explain as I am clueless.berkeman said:Good question. Does not appear to be ASCII or some other similar encoding. I know which answer I would pick, but it still has the con that it doesn't fit any simple pattern, and relies on an assumption about the overall pattern...
Explain which part?dirk_mec1 said:Please explain as I am clueless.
What you would pick and why.berkeman said:Explain which part?
Like I said it was in a series of other much simpler sequences therefore I would not expect anything out of the ordinary.jedishrfu said:Sometimes number sequences aren’t based on an arithmetic or geometric progression. They instead might be character codes like ASCII or Unicode and when converted to characters display a message. Or they could be some well known number like pi broken up into smaller two digit numbers, 31 41 59 26 ...
So if your sequence is from a math book it may be an arithmetic or geometric sequence. If it was from a puzzle book then it might be some more fanciful scheme.
Can you tell us where these series were? It would help us to know that.dirk_mec1 said:Like I said it was in a series of other much simpler sequences therefore I would not expect anything out of the ordinary.
I'm happy to, but I'd like to see the source first.dirk_mec1 said:What you would pick and why.
dirk_mec1 said:Like I said it was in a series of other much simpler sequences therefore I would not expect anything out of the ordinary.
Ray Vickson said:People keep asking you, and for some reason you keep refusing to answer. Is the problem from a book? If so, which book? Is this part of a course, or is it just "recreational math"?
I can see assessment value in something like that is the task is to see how answers you can generate with convincing rationales. That, of course, is not the case here.LCKurtz said:Which two are the most similar of: A cannonball, a pencil, a key? I can loosely defend more than one answer to that ridiculous question and the whole test was somewhat like that.
LCKurtz said:The question in this thread strikes me as a waste of time for similar reasons.
Could you please show me your line of reasoning regarding this sequence before we are going too far offtopic?jedishrfu said:Yeah these tests reminded me of English class. Now students underline the gerund in the sentence below.
And I underlined the “ger” in one word and “und” in another. Wrong!
The pattern in this number sequence is to subtract 3 from the first number, add 4 to the second number, and increase the increments by 5 for each subsequent number.
The next number in this sequence would be 104, following the pattern of subtracting 3 from the previous number and increasing the increments by 5.
The formula for generating this number sequence would be n = 83 - 3x + 4(x-1)(x-2) where x is the position of the number in the sequence.
This sequence is considered arithmetic because there is a constant difference between each number.
This number sequence can be used in real life to represent a pattern of change, such as temperatures over time or stock market values, and can be used to make predictions or analyze trends.