✓ 5 MARKS
Definitions / Laws
🔥 APPEARED IN 3 BOARD SETS
A relation R is defined on a set of real numbers $\mathbb{R}$ as R = {(x, y) : x . y is an irrational number}. Check whether R is reflexive, symmetric and transitive or not.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2023 | Series 65-1 | Set 1 | Question 32 |
| CBSE 2023 | Series 65-1 | Set 2 | Question 34 |
| CBSE 2023 | Series 65-1 | Set 3 | Question 35 |
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)