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A box contains tiles, numbered 1, 2, 3,..., 49, 50. Only tiles which are marked with a number congruent to 2 mod 8 are blue. One tile is chosen randomly from the box. What is the probability that the tile is blue?

 Dec 23, 2021
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{1, 2, 3, ........50} mod 8 ==2

 

You have the following numbers: 2,  10,  18,  26,  34,  42, 50 ==7 integers congruent to 2 mod 8

 

Therefore, the probability is: 7 / 50

 Dec 24, 2021

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