A bag contains 26 letters and 10 numerals. Robin draws two cards from the bag. What is the probability that she draws 2 numerals?
+23246 There is a total of 35 cards, 26 + 10.
The probability that the first card contains a numeral is 10/36.
If the first card is a numeral, the probability that the second card also contains a numeral is 9/35. 9 numerals remain, 35 cards remain.
The probability that both are numerals is (10/36) x (9/35) = 1/14.
+23246 There is a total of 35 cards, 26 + 10.
The probability that the first card contains a numeral is 10/36.
If the first card is a numeral, the probability that the second card also contains a numeral is 9/35. 9 numerals remain, 35 cards remain.
The probability that both are numerals is (10/36) x (9/35) = 1/14.
