Convert 4/16 to a decimal.
0.1
O
0.25
0.5
0.75

0.25

How to Solve:

Take the denominator of 4/16 and find a number to make it 10, 100, any one followed by zeroes:

16 x 6.25 = 100

Do the same to the numerator:

4 x 6.25 = 25

Now, take 25 and take a decimal point two spaces to the right:

0.25

There are n! ways of arranging n elements. This is because you have n possible choices for the first position, the remaining n-1 choices for the second position, and so on, until you're forced to pick the only remaining option.

So, there are

ways of arranging 6 elements in a certain order.