I choose a card at random from a well-shuffled deck of 52 cards. There is a 1/4 probability that the card chosen is a spade, a 1/4 probability that the card is a heart, a 1/4 probability that the card is a diamond, and a 1/4 probability that the card is a club. Both spades and clubs are black cards, whereas hearts and diamonds are red. The probability that the card chosen is not a spade is:
A)0.25.
B)0.5.
C)0.75.
D)1.

Question

Quizplus · Accepted Answer

Since there is a 1/4 probability of choosing a spade, the probability of not choosing a spade is 1 - 1/4 = 3/4 or 0.75.

I Choose a Card at Random from a Well-Shuffled Deck