the possibility of flipping heads is 1 in 2 (1/2) the possibility of pulling a black card is 26 in 52 (26/52) which equals 1 in 2 (1/2) multiply those together and you get 1 in 4, 1/4, or a 25%
The probability of flipping a coin and landing a heads is 1/2. Their are 26 black cards in a standard deck of 52 cards- 26/52 (1/2). Multiply the fractions to get the probability.