Find the number of ways of selecting 8 subjects from 12 subjects for an examination
Answer Details
This question is asking us to find the number of ways to select 8 subjects out of 12 subjects. This is a combination problem since the order in which the subjects are selected does not matter.
The formula for combination is nCr = n!/r!(n-r)!, where n is the total number of items, r is the number of items to be selected, and ! represents the factorial function.
Applying this formula to the given problem, we have:
12C8 = 12!/8!(12-8)! = (12x11x10x9)/(4x3x2x1) = 495
Therefore, there are 495 ways of selecting 8 subjects out of 12 subjects. Hence, the correct option is 495.