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प्रश्न
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
योग
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उत्तर
Total number of figures
n(S) = 8 triangles + 10 squares = 18
P(lost piece is a triangle) = `8/18 = 4/9`
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