A box contains cards bearing numbers from 6 to 70. if one card is drawn at random from the box , find the probability that it bears (i) a one digit number. (ii) a number divisible by 5. (iii) an odd number less than 30. (iv) a composite number between 50 and 70. 27.
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total 65 cards
1) total 1 digit card are 6,7,8,9 that is possible outcomes are 4 so p=4/65
2)a number divisible by 5
total no. of possible outcomes are 65/5= 13
so p = 13/65=1/5=0.2 or 20%
3) an odd no. less than 30
total odds till 30 are 15 out of which 1,3,5 are not in cards so total no. of possible outcomes are 15-3=12 so p = 12/65
4)composite no. are those which can be divided by one,or by any other no that gives you answer in whole no. so composite no. b/w 50 to 70 are 50,51,52,54,55,56,57,58,60,62,63,64,65,66,68,69,70. ie total possible outcomes are 17 so p =17/65
1) total 1 digit card are 6,7,8,9 that is possible outcomes are 4 so p=4/65
2)a number divisible by 5
total no. of possible outcomes are 65/5= 13
so p = 13/65=1/5=0.2 or 20%
3) an odd no. less than 30
total odds till 30 are 15 out of which 1,3,5 are not in cards so total no. of possible outcomes are 15-3=12 so p = 12/65
4)composite no. are those which can be divided by one,or by any other no that gives you answer in whole no. so composite no. b/w 50 to 70 are 50,51,52,54,55,56,57,58,60,62,63,64,65,66,68,69,70. ie total possible outcomes are 17 so p =17/65
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