Page 8 - Digi notes maths

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
S  HH,HT,TH,T T  n   4
s
1. P Head on th e first co in   n HT ,HH   2
n   s 4

2. P Head on th e second coin   n  TH ,HH   2
n   s 4

3. P Head on bo th the coi ns   n HH   1
n
4
  s
TT
4. P No Heads   n    1
n   s 4

5. P At least o ne Head   n HT ,TH ,HH   3
n   s 4

6. P At most on e Head   n  TT ,HT ,HT   3
n   s 4

3. An unbiased dice is thrown at random. What is the probability

of getting:

1) A number which is a multiple of 3.

2) A number which is a multiple of 3 and 2.

3) A number which is a multiple of 3 or 2.

4) An even number.

5) An odd number.

6) A prime number.

7) A natural number.

8) A fractional number.

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