How many ways can 4 people be chosen from a group of 12?

The number of ways to choose 4 people from a group of 12 can be calculated using the combination formula, which is given by ( \binom{n}{r} = \frac{n!}{r!(n-r)!} ). Here, ( n = 12 ) and ( r = 4 ). Thus, ( \binom{12}{4} = \frac{12!}{4!(12-4)!} = \frac{12!}{4! \cdot 8!} = \frac{12 \times 11 \times 10 \times 9}{4 \times 3 \times 2 \times 1} = 495 ). Therefore, there are 495 ways to choose 4 people from a group of 12.