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𝑋 and 𝑌 are two independent random variables with variances 1 and 2, respectively

Q. 𝑋 and 𝑌 are two independent random variables with variances 1 and 2, respectively. Let 𝑍 = 𝑋 − 𝑌. The variance of 𝑍 is

(A) 0 (B) 1 (C) 2 (D) 3

Ans: 3

Next Read: Consider two functions 𝑓(𝑥) = (𝑥 − 2)2 and 𝑔(𝑥) = 2𝑥 − 1, where 𝑥 is real »

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A glass fibre of 5 micron diameter is subjected to a tensile stress of 20 MPa
Determine the correctness (or otherwise) of the following Assertion [A] and the Reason [R]
Determine the correctness (or otherwise) of the following Assertion [A] and the Reason [R]