Discrete Mathematics MCQs | Page - 18

Q. 171) Which of the following can only be used in disproving the statements?

Q. 172) When to proof P→Q true, we proof P false, that type of proof is known as                        

Q. 173) In proving √5 as irrational, we begin with assumption √5 is rational in which type of proof?

Q. 174) A proof covering all the possible cases, such type of proofs are known as

Q. 175) During a month with 30 days, a cricket team plays at least one game a day, but no more than 45 games. There must be a period of some number of consecutive days during which the team must play exactly               number of games.

Q. 176) In how many ways can 8 different dolls be packed in 5 identical gift boxes such that no box is empty if any of the boxes hold all of the toys?

Q. 177) A group of 20 girls plucked a total of 200 oranges. How many oranges can be plucked one of them?

Q. 178) In a get-together party, every person present shakes the hand of every other person. If there were 90 handshakes in all, how many persons were present at the party?

Q. 179) A bag contains 25 balls such as 10 balls are red, 7 are white and 8 are blue. What is the minimum number of balls that must be picked up from the bag blindfolded (without replacing any of it) to be assured of picking at least one ball of each colour?

Q. 180) The number of diagonals can be drawn in a hexagon is