Question 1166727: Hello, I'm having a hard time finding the sequence of this number pattern. Please help me. Thank you in advance 😊
5*4 = 17
6*8 = 22
2*8 = 10
9*6 = __
Note: My teacher told me that the asterisk (*) can be any operation.
Edit: I have written in my first question that 5*4=14, but it's actually 17 and not 14. Sorry.
Answer by Edwin McCravy(20056)   (Show Source):
You can put this solution on YOUR website!
I notice that in all four cases, that the second number is even.
input #1 Input #2 Output
5 4 17
6 8 22
2 8 10
9 6 ?
What we can do with even numbers, that we can't do with odd numbers,
is to take half of them and get a whole number. So let's take half
of them and see if that helps:
Half of
input #1 Input #2 Output
5 2 17
6 4 22
2 4 10
9 3 ?
Aha, I see that if I subtract half of input #2 from the output number,
I always get 3 times input #1. So the simplest pattern is:
Multiply input #1 by 3
Take half of the second input
Add them together.
That works in the first 3 cases:
So to find the answer to the fourth case:
Multiply 9 by 3, get 27
Take half of the second input 6, get 3
Add them together, 27+3 = 30.
Edwin
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