Emma B

Newest questions posted by Emma B
  1. Pre Calc

    The symbol nCr, rea "n choose r" or "the number of combinations of n things taken r at a time" is the number: n! ----- r!(n-r)! a:find 4C1 b:Find 5C0 and 5C5 c: Find 7C1, 7C2, 7C3