 Hi and welcome to the session. Let us discuss the following question. Question says, 5 cards, the 10, Jack, Queen, King and Ace of Diamonds are well shuffled with their face downwards. One card is then picked up at random. First part is, what is the probability that the card is a queen? First of all, let us understand that probability of occurrence of an event e denoted by Pe is defined as number of outcomes favourable to e upon total number of possible outcomes. This is the key idea to solve the given question. Let us now start with the solution. Now we are given 5 cards of diamonds, 10, Jack, Queen, King and an Ace. Now out of these 5 cards, one card is drawn at random. Now one card can be chosen from these 5 cards in 5 ways. So total number of possible outcomes is equal to 5. Now we have to find the probability that the card is the Queen. Now clearly we can see there is only one Queen in these cards and this one Queen can be chosen only in one way. So total number of outcomes favourable to the Queen is equal to 1. From key idea we know probability of an event e is equal to number of outcomes favourable to e upon total number of possible outcomes. Here the event is card drawn is the Queen. So probability that the card drawn is the Queen is equal to number of outcomes favourable to the Queen upon total number of possible outcomes. So we can write probability of getting the Queen is equal to number of outcomes favourable to the Queen that is 1 upon total number of possible outcomes that is 5. So our required answer is probability that the card drawn is the Queen is equal to 1 upon 5. This completes the session. Hope you understood the solution. Take care and keep smiling.