✓ 2 MARKS
Reasoning / Why
🔥 APPEARED IN 3 BOARD SETS
Let R be a relation defined by R = {(x, y) : x, y are Roll Numbers of students such that y = x^3}. List the elements of R. Is R a function ? Justify your answer.
01 // VERIFIED BOARD OCCURRENCES
| Year | Paper Code | Set | Position |
|---|---|---|---|
| CBSE 2025 | Series 65-5 | Set 1 | Question 37(iii)(b) |
| CBSE 2025 | Series 65-5 | Set 2 | Question 38 |
| CBSE 2025 | Series 65-5 | Set 3 | Question 36(iii)(b) |
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)