Two cards are drawn at random from a pack of 52 cards. What is the probability that either both are black or both are queens?
N(S) = 52C2 = 1326 Let A be the event of getting two Black cards And B be the event of getting two queens And (A∩B) be the event of getting two black queens ∴ n(A) = 26C2 , n(B) =4C2 , n(A∩B) = 2C2 ∴ P(A) = 26C2/52C2 , P(B)= 4C2/52C2 , P(A∩B) = ( 2C2)/52C2 Required Probability = P(A) + P(B) - P(A∩B) = 26C2/52C2 + 4C2/52C2 - ( 2C2)/52C2 = 325/1326+ 1/221+ 1/1326 = 55/221
What was the language of news papers Maratha and kesari respectively, were published by Bal Gangadhar Tilak?
Which of the following is an example of a physical feature formed by extensive gully erosion?
What is the Paik Strait?
In which of the following places are the Dilwara temples of Jainism located?
Which pair is not correctly matched?
Which of the following districts has population growth rate less than 10 per cent, as per census 2011?
Choose the most appropriate synonym of the given word.
AFFLUENT
Which of the following was one of the impact of Swadeshi movement in the communication system of India?
Who imposed a tax named “Gharai”?
The layer is the upper limit of our atmosphere. It extends from the top of the thermosphere up to 10,000 km (6,200 miles).
