15 cards numbered 1,2,3...........15are put in a box and mixed thoroughly .Acard drawn at random from box. Find probability that card drawn bears. (a) an even numbers (b) a no. divisible by 2 or 3
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a)7/15..
b)10/15=2/3....
b)10/15=2/3....
tanishacute11:
a) 7/15
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Total even no. b/w cards are 2,4,6,8,10,12,14
So probability will be 7/15
2-by 2 total 7 no. are divisible that is 7/5
By 3 total 3 no. are divisible that is 3/15
So probability will be 7/15
2-by 2 total 7 no. are divisible that is 7/5
By 3 total 3 no. are divisible that is 3/15
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