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Intersection of Sets

Question 37ii...

Question

Question 37(ii)
A child's game has 8 triangles of which 3 are blue and rest are red, and 10 squares of which 6 are blue and rest are red. One piece is lost at random. Find the probability that it is a square?

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Solution

Total number of figures
n(S) = 8 triangles + 10 squares = 18

P (lost piece is a square) $= \frac{10}{18} = \frac{5}{9}$

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Q. Question 37(iii)
A child's game has 8 triangles of which 3 are blue and rest are red, and 10 squares of which 6 are blue and rest are red. One piece is lost at random. Find the probability that it is a square of blue colour?

Q. Question 37(iv)
A child's game has 8 triangles of which 3 are blue and rest are red, and 10 squares of which 6 are blue and rest are red. One piece is lost at random. Find the probability that it is a triangle of red colour?

Q. Question 37(i)
A child's game has 8 triangles of which 3 are blue and rest are red, and 10 squares of which 6 are blue and rest are red. One piece is lost at random. Find the probability that it is a triangle?

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