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प्रश्न
Find the number of (ii) triangles
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उत्तर
(ii) Number of triangles (i.e. 3 sides are to be selected) = \[{}^{10} C_3 = \frac{10}{3} \times \frac{9}{2} \times \frac{8}{1} = 120\]
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संबंधित प्रश्न
Compute:
(i)\[\frac{30!}{28!}\]
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