Rihanna pull card from the standard deck period she picked a card, recorded the suit and put it back.She repeated the process.Many times predict how many diamonds she would pick if she drew a hundred and seventy cards
Given that there are a total of 52 cards in a standard deck and 13 of those are diamonds, the probability of Rihanna drawing a diamond card in a single draw is 13/52 or 1/4.
Therefore, if she drew a hundred and seventy cards, it is expected that she would draw approximately 170/4 = 42.5 diamonds.
Since you cannot draw half of a card, it is likely that she would draw either 42 or 43 diamonds in total out of 170 cards.