Question
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?Solution
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
In a certain code language, PALM is coded as 16 and BIRTH is coded as 18. How will CHANT be coded in that language?
In a certain coding system, 'gloden globe award' is coded as 'mv, rg, tp'. 'nomination action award' is coded as 'su, me, tp' and 'globe jury action' i...
In a certain code language, STATION is coded as 21-22-3-22-11-17-16, and CRUEL is coded as 5-20-23-7-14. How will VIXEN be coded in that language?
What is the code for "Saathi will empower"?
In a certain code language, ' FLIGHT' is written as ‘MEHHU' and 'DEMAND' is written as ' FCBLEM'. How will ' VALUES' be written in that language?
In a certain code language, ‘JOTQJSF’ is written as ‘KQUUKAG’. How will ‘GPSHJWF’ be written in that language?
IF 'SHAPER' is coded as 'EDVGKC', how will ‘HEIGHT’ be coded as in the same code?
In a certain code language, ' LEAVES' is coded as ‘MFBWFT' and 'GRATE' is coded as ' HSBUF’. How will 'ORANGE' be coded in that language?
In a certain code language, '234' means 'state formulae terms', '418' means 'gravitational state force' and '126' force are between'. Which of the foll...
If the phrase “some box may” is coded as “dlm zlm vlm” and the phrase “some they” is coded as “dlm ulm”, then what will be the code for...
Relevant for Exams:
