8 public questions tagged with this topic.
We can see that complete solution: write formula, plug data, do arithmetic. Final value matches Var (X) = E[(X - μ)]². Simple and accurate.
Ref: NCERT Mathematics Class XII — Probability
From the definition, after simplifying, 0.6 is left. The method is simple: formula → substitution → calculation → answer.
Ref: NCERT Mathematics Class XII — Probability
Understanding this is easy: solving fully: apply relevant formula, put numbers, compute. Result comes as 1/π. Easy verification shows it satisfies condition.
Ref: NCERT Mathematics Class XII — Probability
The logic is straightforward: we verify 0.6 by full calculation: use standard identity, substitute, simplify step by step to reach 0.6.
Ref: NCERT Mathematics Class XII — Probability
Notice that complete solution: write formula, plug data, do arithmetic. Final value matches 3/4. Simple and accurate.
Ref: NCERT Mathematics Class XII — Probability
Understanding this is easy: complete solution: write formula, plug data, do arithmetic. Final value matches 5.71. Simple and accurate.
Ref: NCERT Mathematics Class XII — Probability
Here's the idea in simple terms: using formula we get 21. Calculation gives this directly, check steps: apply rule, substitute values, simplify to get 21.
Ref: NCERT Mathematics Class XII — Probability
We can see that solving fully: apply relevant formula, put numbers, compute. Result comes as 64. Easy verification shows it satisfies condition.
Ref: NCERT Mathematics Class XII — Probability
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