Question
A card is drawn randomly from a deck of ordinary playing
cards. You win Rs.100 if the card is a spade or an ace. What is the probability that you will win the game?Solution
Let S = the event that the card is a spade; and let A = the event that the card is an ace. We know the following: There are 52 cards in the deck. There are 13 spades, so P(S) = 13/52. There are 4 aces, so P(A) = 4/52. There is 1 ace that is also a spade, so P(S ∩ A) = 1/52. Therefore, based on the rule of addition: P(S ∪ A) = P(S) + P(A) - P(S ∩ A) P(S ∪ A) = 13/52 + 4/52 - 1/52 = 16/52 = 4/13
The Defence Research and Development Organisation (DRDO) recently tested which long-range glide bomb from an Su-30MKI fighter jet?
In November 2021, the RBI has authorised _______ as its agency bank for undertaking government businesses.
Which Indian cricketer was awarded honorary membership by the Melbourne Cricket Club (MCC)?
Which Indian state launched the largest waste-to-energy power plant, inaugurated by Union Home Minister Amit Shah?
Reserve Bank of India will issue new five-year government bonds (maturing in 2028) to raise about _____ in the first bond auction of the current financi...
How much in total has been disbursed under the PM-KISAN scheme to more than 11 crore farmer families?
A four year mentorship programme ‘Project Arohan’ to provide guidance to students which state government has launched it recently?
Former cricketer Ajay Jadeja was recently declared heir to which royal throne?
Which ministry oversees the Swachh Bharat Mission - Urban (SBM-Urban)?
What does Microsoft’s BioEmu AI model achieve prediction accuracy within?