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1 answer:
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Answer:
48 ways
Step-by-step explanation:
Let me take a guess
S₁_₁₅ = (1+15)*7 + 8 = 120
There are 48 combinations of distinct digits from 1 to 15 to make 20
120-20=100
So every 20 has a corresponding 100
I wish I got it right, otherwise report it.
The function is 
.
This means that as we get from 1 to 2, we have the following values:
, and 
.
Similarly, if we check x=3, we have
.
We can see that as x changes by 1 (with greater values), y increases by a factor of 12.
Answer: multiply by 12
This means that as we get from 1 to 2, we have the following values:
Similarly, if we check x=3, we have
We can see that as x changes by 1 (with greater values), y increases by a factor of 12.
Answer: multiply by 12