Question

A bag Contains 10Red and 6 green Balls and four s successive draws are madewithout replaceemat and with replacement .find the probability that they are alternatively of same Colour.
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Answer 1

Step-by-step explanation:

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➺ Cot A=( 2/5 )

∴ tan A =( 5/2 )

[cosec θ = 1 /sinθ ⟹√(1+tan²θ)/ tanθ]

➺4+4cot²A

➺4 (1+cot²A)

➺4 (cosec²A)

➺4×( √(1+tan²θ)/ tanθ)

➺4×[ √(1+(5/2)²)/ (5/2)]

➺4×[ √(1+(25/4))/ (5/2)]

➺4×[ √( (4+25)/ 4) / (5/2)]

➺4×[ √(29/ 4) / (5/2)]

➺4×[ 1.34 / (5/2)]

➺4×[ 1.34 ×2 / 5]

➺4×[ 2.68 / 5]

➺4×[ 0.536 ]

➺2.144

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