×

# A Moderator's Apology

I keep on disputing numerous problems of this type. I don't understand why the answer is so obvious to the author.

In my opinion, these questions are not really good.

I'll take Spiked Math's help to illustrate this out:

Spiked

Moral: There are infinite formulae that fits a finite number of elements. There is no best fit formula. It is just your perception

Fit

2 years, 1 month ago

Sort by:

image

Fit this polynomial · 2 years, 1 month ago

"much solution"

"very logic"

LMAO!!! · 2 years ago

Find the next number of the sequence

$$1, 1, 1, 120, ?$$

Ans: $$25852016738884976640000$$, because

$$\Gamma (\Gamma (1))=1$$
$$\Gamma (\Gamma (2))=1$$
$$\Gamma (\Gamma (3))=1$$
$$\Gamma (\Gamma (4))=120$$
$$\Gamma (\Gamma (5))=25852016738884976640000$$ · 2 years, 1 month ago

Oh man, I just saw this post, I should have used this for TKC. · 1 year, 10 months ago

Hi; whenever I see those type questions I always just fit a polynomial through them. Admittedly, it was tough with Q2. · 2 years, 1 month ago

:D I agree with you. I fit the polynomial too. But when I try to enter the answer, Brilliant says that only integer values are allowed. · 2 years, 1 month ago

Loved it . · 2 years ago

So, here's the ultimate way to cure this problem:

Let us come up with a way to put a polynomial through any set of inputs and outputs x and y.

Any clues?

For example, I defined one as follows:

Find the next number in the sequence: $$0,0,0,0,0,0,0,0,0,__$$

Ans: 10!

Now if there was a way to, say, put a function through something like 1, 4, 9, 16, 25, __ - that'd be great. · 2 years ago

This is the standard W|A/Mathematica command for fitting a polynomial

InterpolatingPolynomial[{1,4,9,16},x]


replace {1,4,9,16} with a set of your own data · 2 years ago

Well I am against those" odd number out of the set" type questions. I mean there we will always be able to choose a suitable prime p for which any 3 are quadratic residues while left one isn't · 2 years, 1 month ago