Evaluate 7C6.
7C6, also known as "7 choose 6", can be calculated using the formula for combinations:
nCr = n! / r!(n-r)!
In this case, n = 7 and r = 6:
7C6 = 7! / 6!(7-6)!
7C6 = 7! / 6! * 1!
7C6 = 7 / 1
7C6 = 7
Therefore, 7C6 = 7.
nCr = n! / r!(n-r)!
In this case, n = 7 and r = 6:
7C6 = 7! / 6!(7-6)!
7C6 = 7! / 6! * 1!
7C6 = 7 / 1
7C6 = 7
Therefore, 7C6 = 7.