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A bag contains 3 Red, 3 Blue and 6 Green balls. Two balls are drawn at random. What is the probability that 1 ball is red and other is blue or 1 ball is...
P and Q together started a business with initial investment in the ratio of 1:4, respectively. The time-period of investment for P and Q is in the ratio...
A is trying to break a bulb by throwing balls at it. If he hits the bulb 3 times in every 10 throws and bulb breaks 3 times out of 13 hits, then find th...
A box consists of 125 apples out of which 25 are rotten. Khushboo comes to buy non-rotten apple. The shopkeeper takes out two apples and hands it over t...
What is the probability that the cards drawn contains 1 red card, 1 purple card and 1 yellow card?
A bag contains B red balls and 9 purple balls. If two balls are drawn at random, one after the other without replacement, and the...
A company wants to pack 144 small boxes, 216 medium boxes, and 288 large boxes into cartons such that each carton contains the same number of boxes of e...
In a bag, there are 7 red balls, 5 black balls, and 9 green balls. If two balls are selected at random, what is the likelihood of picking one red ball a...
If the letters of the word HORIZON be arranged at random, what is the probability that all the vowels are together?
When two dice are thrown, what is the probability that sum of the number appeared is 4 or 5?