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# Finding patterns in numbers

This video discusses how to identify patterns in number sequences. By analyzing three different sequences, the speaker demonstrates that patterns can involve adding a certain amount to each number, or multiplying each number by a certain amount. It's important to ensure the pattern remains consistent throughout the sequence.

## Want to join the conversation?

• In the 1st pattern isn't 67 + 21= 88 ?
Why is the next number 89 in the pattern?
• There was something on the side that said the "Sal meant to say 88 but accidently said 89."
• Can a pattern alternate? ie. Add three, then subtract five, then add three again, then subtract five, etc.
• Yes
for example -
1,2,5,6,9 (+1+3+1+3)
• Is 91 an odd number?
• 91 is not divisible by 2 so it's not even. It's odd.
• what if I have the numbers, 2,5,11,23,47,___, whats the next number in the pattern?
(1 vote)
• Note that each number is a little more than double the number before it. Looking more closely, we see that each number is 1 more than double the number before it:
2 * 2 + 1 = 5.
2 * 5 + 1 = 11.
2 * 11 + 1 = 23.
2 * 23 + 1 = 47.

If this pattern continues, the next number would be 2 * 47 + 1 = 95.

Have a blessed, wonderful day!
• Can we not divide in a pattern?
• Dividing in a pattern is basically negative exponents. While 2^2 is 2*2. 2^-2 is (1)/(2^2). If you have any more questions about this, feel free to ask. :)
(1 vote)
• at ,sal said 3,6,12,24's pattern is*2,but itcould be+3,+6,+9,+12...
• The pattern you speak of is one that always changes, in this way, you are changing the pattern by having it have it's own pattern, which is a rate of change to the pattern by 3.
However, the "+3, +6, +9, +12.." pattern will not work for if you apply it to the sequence of numbers:
3, 6, 12, 21, 33...
(1 vote)
• Sal, in your first example you made 2 mistakes: 1.) 67+21= 88 not 89, therefore 88+21=109 not 110.