By Bayes' theorem, P(late)=(3/10)(1/4)+(1/5)(1/3)+(1/10)(1/12)+(2/5)(0). Common denominator 120: 9/120+8/120+1/120=18/120=3/20. Then P(bus∣late)=[(1/5)(1/3)]/(3/20)=(1/15)(20/3)=4/9.
The number of all possible matrices of order 3 × 3 with each entry 2 or 3 is.
CUET UG 2023 — Mathematics Applied-Mathematics
2023mcqeasy
The number of all possible matrices of order 3 × 3 with each entry 2 or 3 is.
Official previous-year question
Held on 23 May 2023 · Verified 13 Jul 2026.
Options
- A
81
- B
27
- C
64
- D
512
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