✓ 1 MARKS
MCQ
🔥 APPEARED IN 3 BOARD SETS
If $3P
A
= P
B
= \frac{3}{5}$ and $P(A|B) = \frac{2}{3}$, then $P(A \cup B)$ is :
A
$\frac{3}{5}$
B
$\frac{1}{5}$
C
$\frac{2}{15}$
D
$\frac{2}{5}$
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2026 | Series 65-5 | Set 1 | Question 18 |
| CBSE 2026 | Series 65-5 | Set 2 | Question 17 |
| CBSE 2026 | Series 65-5 | Set 3 | Question 8 |
02 // OFFICIAL CBSE MARKING SCHEME BREAKDOWN
- Step 1: Stating the fundamental formula / law statement (+1 Mark)
- Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
- Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)