So you have
8 digits (number available) to form
3 digit numbers (number selected).
Using the formula

where a is the number of available digits, P is the permutation function and c is the number of digits to be selected.
The number of three digit numbers that can be formed =

=
336 <span>
O R</span>By using the formula

where a is the number of available digits and c is the number of digits to be selected.<span>
</span>⇒

<span>
</span>⇒

<span>
</span>⇒ Permutation =
336<span>
</span>
Answer:
<u><em>Rounded to the Nearest Tenth is V=769.3π </em></u>
Step-by-step explanation:
The diameter of the figure is 7, so the radius is 3.5. So, the radius is 3.5
The height is 20
Formula for cylinders= V= Bh or V=πr2h
I will use V=πr2h
V=π(3.5)²(20)
V=π(12.25)(20)
V=π(245)
<u><em>V=769.3π</em></u>
<u><em></em></u>
<u><em>Hope this helped </em></u>
5^23 - 5^21 = 5^(21+2) - 5^21
5^23 - 5^21 = 5^21*5^2 - 5^21*1
5^23 - 5^21 = 5^21*(5^2 - 1)
5^23 - 5^21 = 5^21*(25 - 1)
5^23 - 5^21 = 5^21*24
5^23 - 5^21 = 24*5^21
5^23 - 5^21 = 24*k
The original number is in the form 24k where k = 5^21, so this proves that the original number is a multiple of 24