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Probability is expressed as
number of favourable outcomes/total number of outcomes
When a coin is flipped, total number of possibilities = 2
It has 1 aed and 1 tail
Probability of getting a head = 1/2
For a deck of cards, the total number is 52. There are 26 black cards
Probability of drawing a black card = 26/52 = 1/2
The events are independent of each other(the outcome of one does not affect the other)
thus,
the probability that she gets “heads” and a black card = 1/2 x 1/2 = 1/4