At a party, every 3rd guest gets a cup, every 4th guest gets a pen and every 9th guest gets a thumbdrive. What is the position of the first guest that will get all three gifts?
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36
Multiples of 9: 9, 18, 27, 36
Position of first guest that receives all 3 gifts
= Lowest common multiple of 3, 4, 9
= 36
Answer(s): 36
