There are 20 cards. Ten of these cards have the letter `"I"` printed on them and the other 10 have the letter `"T"` printed on them. If three cards picked up at random and kept in the same order, the probability of making word IIT is

Five cards – the ten, jack, queen king and ace of diamonds, are well-shuffled with their face downwards. One card is then picked up at random. What is the probability that the card is the queen?

Seven cards : the eight, the nine, the ten, jack, queen, king and ace of diamonds are well shuffled. One card is then picked up at random. (i) What is the probability that the card drawn is the eight or the king ?

How many sets of two letters have as many letter between them as in the alphabetical order in the word 'ARISTOCRAT?

Five cards – the ten, jack, queen king and ace of diamonds, are well-shuffled with their face downwards. One card is then picked up at random. If the queen is drawn and put a side, what is the probability that the second card picked up is (a) an ace? (b) a queen?

Seven cards : the eight, the nine, the ten, jack, queen, king and ace of diamonds are well shuffled. One card is then picked up at random. (ii) If the king is drawn and put aside, what is the probability that the second card picked up is : (a) an ace ? (b) a king ?

There are ten balls numbered from 1 to 10 in a box . If one of them is selected at random. what is the probability that the number printed on the ball would be an even number greater than 4

A hat contains a number of cards with 30% white on both sides, 50% black on one side and whit e on the other side, 20% black on both sides. The cards are mixed up, and a single card is drawn at random and placed on the table. Its upper side shows up black. The probability that its other side is also black is 2//9 b. 4//9 c. 2//3 d. 2//7

Three cards are drawn at a time at random from a well shuffled [ack of 52 cards . Find the probability that all the three cards have same number .

Five cards—the ten, jack, queen, king and ace of diamonds, are well shuffled with their face downwards. One card is then picked up at random.(i) What is the probability that the card is the queen?(ii) If the queen is drawn and put aside, what is the probability that the second card picked up is (a) an ace? (b) a queen?

Cards bearing numbers 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20 are kept in a bag. A cord is drawn at random from the bag. Find the probability of getting a card which is an odd number.