defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Probability Mean and Variance of Random variables
If X & Y two independent Binomial Random variables such that X ∼ B (2, p) Y ∼ B (4, p) if p (x ≥ 1) = 5/9
i. p (y = 4)
ii. V(2x - y) respectively,
1
\(\frac{1}{27}, \ \frac{24}{9}\)
2
\(\frac{1}{81}, \ \frac{24}{9}\)
3
\(\frac{1}{81}, \ \frac{25}{9}\)
4
None