15.(ii) If E and F are events such that , and find (ii) P(not E and not F).
Given, , and
To find :
We know,
And
Therefore,
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
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CBSE Class 12 accountancy board exam analysis 2024 out; paper rated easy, balanced
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