Page 3 - Home Assignment
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Number of red apples = 4
Probability of getting red apple =4/7
4. Numbers 1 to 10 are written on ten separate slips (one number on
one slip), kept in a box and mixed well. One slip is chosen from the
box without looking into it. What is the probability of:
(i) getting a number 6.
(ii) getting a number less than 6.
(iii) getting a number greater than 6.
(iv) getting a 1-digit number.
Ans. (i) Outcome of getting a number 6 from ten separate slips is one.
Therefore, probability of getting a number 6 =1/10
(ii) Numbers less than 6 are 1, 2, 3, 4 and 5 which are five. So there are 5
outcomes.
Therefore, probability of getting a number less than 6 = 5/10 =1/2
(iii) Number greater than 6 out of ten that are 7, 8, 9, 10. So there are 4
possible outcomes.
Therefore, probability of getting a number greater than 6 =4/10 =2/5
(iv) One digit numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9 out of ten.
Therefore, probability of getting a 1-digit number =9/10
5. If you have a spinning wheel with 3 green sectors, 1 blue sector and
1 red sector, what is the probability of getting a green sector? What is
the probability of getting a none-blue sector?
Ans. There are five sectors. Three sectors are green out of five sectors.
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