A Lucky Sevens Crazy Combo

The night before December 7th, the Mega Millions lottery anticipated the date by selecting 4 numbers that were divisible by 7. In the Tuesday Dec 6 drawing, the white balls were:

7  21  29  35  49

We classify this as a crazy combo because of its rarity. Of the 56 Mega Millions white balls, only 8 are divisible by the number seven, and half of them were drawn that night. Only the center number, 29, is not divisible. However, it is important to note that it is only 1 digit off of 28 which is also divisible by 7.

If a player wheeled the 8 available numbers, he would have spent a total of $56 and would have won $642 that night. Not bad for a days work!