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In this series, number of 2’s are very large & number of 5’s are very less so determine the number of zeros , we have to calculate number of 5’s only because these are less. 12 × 23 × 34 ×..............2627 56 = 6 1011 = 11 1516 = 16 2021 = 21 2526 = 5(2 x 26)= 52 ∴ Total number of zeroes = 6 + 11 + 16 + 21 + 52 = 106
A bag contains 9 blue balls, 16 red balls, and 20 green balls. One ball is drawn at random. Find the probability that the ball drawn is either blue or g...
Tom and Jerry throw alternatively a pair of dice. Tom wins if he throws 8 before Jerry throws 7 and Jerry wins if he throws 7 before Tom throws 8. Find...
Three cards are drawn one after another with replacements from a standard deck of 52 cards. What is the probability of getting the first card a Queen, t...
If 2 pens are drawn at random what is the probability that none of them is blue?
Three Marbles and three balls are kept in a box. If two items are chosen at random, Find the probability that one is marble and another one is ball?
Tokens numbered 1 to 350 are in a bag. What is the probability that the Token drawn has a number which is a multiple of 6 or 7?
In a bag, there are 5 red balls, 6 green balls, and 9 blue balls. If two balls are drawn at random without replacement, what is the probability that bot...
A bag contains black and white balls, such that the probability of picking a black ball is 4/7. If the probability of picking two black balls without re...
