Question
If average of first 12 numbers is (n – 23) and the sum
of remaining number is 925. Find the value of ‘n’, if the average of 22 numbers is ‘n’.ÂSolution
According to the question, => 22n = 12 × (n – 23) + 925 => 22n - 12n = 925 – 276 => n = 64.9
A letter is taken out at random from ‘CHACHAKE’ and another is taken out from ‘PATAKHE’. The probability that they are the same letter isÂ
...A bag holds a total of 7 balls, consisting of 3 red balls and 4 black balls. If two balls are randomly drawn from the bag without replacement, what is t...
In a lottery, there are 11 prizes and 22 blanks. A lottery is drawn at random. What is the probability of getting a prize?
...Bag A contains x red balls and 6 blue balls. Bag B contains 5 red balls and 4 blue balls. One ball is drawn at random from Bag A and placed into Bag B. ...
A container holds 15 orange, 9 purple, and 6 gray balls. If 2 balls are picked at random without replacement, find the probability that the first ball i...
 A bag contains 4 white balls, 5pink balls and 3 black balls. 2 balls are drawn randomly. What is the probability that there are no black balls?
John bought a watch for Rs. 3,400 and sold it at a profit percentage equal to the profit percentage earned on selling 10 bicycles for the cost price of ...
In a lottery, there are 8 prizes and 20 blanks. A lottery is drawn at random. What is the probability of getting a prize?
...If the letters of the word PLAYERS be arranged at random, what is the probability that there are exactly five letters between P and S? Â
What is the probability that the cards drawn contains 1 red card, 1 purple card and 1 yellow card?
Relevant for Exams:
