যদি x = 16 এবং y = 3 হলে নিচের কোনটি মূলদ?

A √(x - y) 

B √xy

C √(x + y)

D (√x)/y

Solution

Correct Answer: Option D

(√x)/y = (√16)/3 = 4/3 (মূলদ)
√(x + y) = √(16 + 3) = √19 (অমূলদ)
√(x - y) = √16 - 3 = √13 (অমূলদ)
√xy = √16 × 3 = √48 (অমূলদ)

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