# Fill.in the two missing terms in this Simple Sequence

What are the two missing numbers in the sequence shown below:

$$\def\S{\phantom{XX}} \large\begin{array}{|c|c|c|c|c|c|}\hline \S&\S&\S&\S&\S&\S\\[-10px] 4 & 5 & 6 & 7 & 8 & 9 \\ 51 & 42 & ? & 84 & 36 & ? \\[-10px]\\\hline\end{array}$$

• Thx for the edits..they look much better..I still don’t have full hang of mathjax. – Uvc Jun 13 '19 at 10:17

$$53$$ and $$08$$.

Because

If you look at the bottom part and swap the digits, you will get: $$15-24-?-48-63-?$$

And to solve this

Look at the differences. The differences are $$9-(11)-(13)-15-(17)$$ so the question marks will be $$35$$ and $$80$$ thus swap the digits again to get the final answer.

Alternatively from @hexomino

The number below is the digit-reversal of "the square of the number above then minus $$1$$".

• rot13(Zber pbapvfryl, jr'er erirefvat gur qvtvgf bs $n^2-1$ jurer $n$ vf gur ahzore ba gbc) – hexomino Jun 12 '19 at 10:26
• Got it!!…………... – Uvc Jun 12 '19 at 10:27
• @hexomino great observation! :o – athin Jun 12 '19 at 13:22