GATE | GATE CS 2010 | Question 61

Hari(H), Gita(G), Irfan(I) and Saira(S) are siblings (i.e., brothers and sisters). All were born on 1st January. The age difference between any two successive siblings (that is born one after another) is less than 3 years. Given the following facts:

i.  Hari's age + Gita's age > Irfan's age + Saira's age 
ii. The age difference between Gita and Saira is 1 year. However Gita is not
    the oldest and Saira is not the youngest. 
iii. There are no twins. 

In what order were they born (oldest first)?

Answer: (B)

Explanation: H + G > I + S
G – S = 1 OR S – G = 1

G is not the oldest and S is not the youngest.

We need to try all options one by one.

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