Q.6 In a group of four children, Som is younger to Riaz. Shiv is elder to Ansu. Ansu is youngest in the
group. Which of the following statements is/are required to find the eldest child in the group?
Statements
1. Shiv is younger to Riaz.
2. Shiv is elder to Som.
(A) Statement 1by itself determines the eldest child.
(B) Statement 2 by itself determines the eldest child.
(C) Statements 1 and 2 are both required to determine the eldest child.
(D) Statements 1 and 2 are not sufficient to determine the eldest child.
Four Children Age Ranking: Which Statement Determines Eldest Child?
Som, Riaz, Shiv, Ansu – Data Sufficiency Logic Puzzle Solved
Shiv is younger to Riaz → Riaz is definitely eldest
Given Information
Ansu is youngest → Ansu < Som, Ansu < Riaz, Ansu < Shiv
Som is younger to Riaz → Som < Riaz
Shiv is elder to Ansu → Shiv > Ansu (already covered)
Statement 1: Shiv is younger to Riaz (Shiv < Riaz)
✅ SUFFICIENT ALONE
Possible arrangements:
Ansu < Som < Shiv < Riaz → Riaz eldest ✓
Ansu < Shiv < Som < Riaz → Riaz eldest ✓
Result: RIAZ is definitely eldest in ALL cases
Statement 2: Shiv is elder to Som (Shiv > Som)
❌ INSUFFICIENT ALONE
Possible arrangements:
Ansu < Som < Shiv < Riaz → Riaz eldest
Ansu < Som < Riaz < Shiv → Shiv eldest
Result: TWO POSSIBILITIES – cannot determine
Complete Order with Statement 1
Ansu < Som < Shiv < Riaz🇺🇳 ELDEST: RIAZ (determined by Statement 1 alone)
Options Breakdown
Shiv < Riaz makes Riaz eldest in all cases. Minimum sufficient data.
Shiv > Som allows 2 possibilities (Riaz OR Shiv eldest).
Statement 1 alone works, so both not “required”.
Statement 1 IS sufficient – contradicts the facts.
Data Sufficiency Decision Tree
| Statement 1 | Statement 2 | Answer |
|---|---|---|
| Sufficient | Don’t care | (A) |
| Insufficient | Sufficient | (B) |
| Insufficient | Insufficient | Both → (C) |
| Insufficient | Insufficient | Both fail → (D) |
Exam Strategy
- TEST STATEMENT 1 ALONE FIRST – ignore statement 2 completely
- TEST STATEMENT 2 ALONE SECOND – ignore statement 1 completely
- Only combine if BOTH individually fail
- “Required” means minimum sufficient data
- Draw age order diagrams visually
