A box contains tiles, numbered 1, 2, 3,..., 49, 50. Only tiles which are marked with a number congruent to $2 \pmod{5}$ are blue. One tile is chosen randomly from the box. What is the probability that the tile is blue? ASAP
boi u from aops?
Listfor(n, 1, 50, n % 5 == 2)
2 7 12 17 22 27 32 37 42 47 >>Total = 10 Blue Tiles.
Therefore, probability is: 10 / 50 = 1 / 5
+4 
