Pen Arrangements #130 / Interview How many ways can 4 different pens be arranged on a desk? Hint Solution Answer Hint Basic counting principle: $$$4!$$$ Basic counting principle: $$4!=4\cdot 3\cdot 2\cdot 1=24$$ ways 24 ways < Prev #129 random #131 Next >
How many ways can 4 different pens be arranged on a desk? Hint Solution Answer Hint Basic counting principle: $$$4!$$$ Basic counting principle: $$4!=4\cdot 3\cdot 2\cdot 1=24$$ ways 24 ways
