Number of favourable outcomes i.e. ‘a card of diamond’ is 13 out of 52 cards. Therefore, probability of getting ‘a card of diamond’ Number of favorable outcomes P(D) = Total number of possible outcome = 13/52 = 1/4 (v) a king or a queen. Total number of king is 4 out of 52 cards. Total number of queen is 4 out of 52 cards
The only complete pattern is the middle one we see that 38-29=9 so the middle number minus the first number equals the third number for the last row 21-1=20 so you have 1 21 20 for the first one