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HCF of two numbers is 13. This means 13 is a common factor to both numbers. LCM is common multiple for the two numbers.
19 rotten bananas are accidentally mixed with 136 good ones. It is not possible to just look at a banana and tell whether or not it is rotten. One banan...
One summer peter visits 4 villages (A, B, C and D) in a random order. Find the probability that he visits (i) A before B (ii) A before B and B before C ...
A bag contains 5 red balls, 7 blue balls, and 8 green balls. Two balls are drawn at random. What is the probability that both balls drawn are of the sam...
Two hats are picked at random, what is the probability that all hats are of green colour?
A bag contains 18 black and 20 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
...Two Dice are thrown simultaneously. Find the probability that the number on the first dice is more than the number of 2nd Dice.
Roger Federer play 3 sets of a tennis match. The probability of his winning the three sets are 1/9,1/4,3/4 respectively. What is the probability that he...
Three cards are drawn randomly from a pack of 52 cards. What is the probability that one will be black and two will be red?
The probability of selecting a rotten egg randomly from a basket of 1000 eggs is 0.16. What is the number of rotten eggs in the basket?
22 defective pens are accidentally mixed with 136 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen i...
