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World's greatest mathematician and their contribution in math

sinθ, cosθ, tanθ: Easy way to remember their values for θ = 0°,30°,45°,60° & 90°

Probability-1 | Permutations and Combinations

Probability-1, Permutations and Combinations, Selections with repetition when order is important, Selections without repetition when order is important, Selections without repetition when order is not important,