A die is tossed thrice. Find the probability of getting an odd number at least once.

Number of possible outcomes on a die = {1, 2, 3, 4, 5, 6} 

Favourable results getting even number = (2, 4, 6) = 3 

Probability of getting even number = 3 / 6 = 1/2 

Probability of getting even number once = 1 / 2 

Probability of getting even number thrice = (1 / 2) x (1 / 2) x (1 / 2) 

= 1 / 8 

Probability of getting at least one odd number = 1 – (1 / 8) = 7 / 8

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