'If 355 equates to 524, and 1235 to 2521, what does 850 equate to?'

1029

Step-by-step explanation:

This is a puzzle problem.

The key here is to recognize the first number given as a CLOCK TIME.

"355" -- make it look like a time, which is

3:55

How do we say this in English?

5 minutes to being 4, right?

or

5 to 4...?

So, it corresponds to "524".

Now, 2nd example:

1235 means 12:35

How do we say that in English?

It is 25 minutes to 1, so we say:

25 to 1, or "2521"

Get it?

Similarly, "850" would be:

8:50 which will mean

10 minutes to 9

or 10 to 9, which is:

"1029"

The answer would be 1029

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680