To multiply fractions, multiply the numerators together and then multiply the denominators together:

\( \frac{4}{5} \) x \( \frac{3}{8} \) = \( \frac{4 x 3}{5 x 8} \) = \( \frac{12}{40} \) = \(\frac{3}{10}\)

A factorial is the product of an integer and all the positive integers below it. To solve a fraction featuring factorials, expand the factorials and cancel out like numbers:

\( \frac{3!}{2!} \)
\( \frac{3 \times 2 \times 1}{2 \times 1} \)
\( \frac{3}{1} \)
3

You have 9 out of the total of 150 raffle tickets sold so you have a (\( \frac{9}{150} \)) x 100 = \( \frac{9 \times 100}{150} \) = \( \frac{900}{150} \) = 6% chance to win the raffle.

To raise a term with an exponent to another exponent, retain the base and multiply the exponents:

To find the average of these 4 numbers add them together then divide by 4:

\( \frac{18 + 10 + 17 + 11}{4} \) = \( \frac{56}{4} \) = 14