Shweta, Yamini, Pooja, and Rakhi are sisters. Yamini is older than at least two of her sisters. Pooja is younger than Rakhi, who is not the oldest. Shweta is older than Pooja but younger than Rakhi. Who is the oldest among them?
Step-by-step Solution:
Let's analyze the given conditions step by step:
1. Yamini is older than at least two of her sisters.
This means Yamini is not the youngest, and there are at least two sisters younger than her.
2. Pooja is younger than Rakhi.
So, Rakhi is older than Pooja.
3. Rakhi is not the oldest.
There is someone older than Rakhi.
4. Shweta is older than Pooja but younger than Rakhi.
This means the order so far (from youngest to oldest) is:
Pooja < Shweta < Rakhi
5. Who is the oldest?
We know Rakhi is not the oldest. Since the remaining person is Yamini and she is older than at least two of her sisters, Yamini must be the oldest.
Final Order (youngest to oldest):
Pooja < Shweta < Rakhi < Yamini
Thus, Yamini is the oldest among them. ✅