Bunuel wrote:

There is at least one viper and at least one cobra in Pandora's box. How many cobras are there?

(1) From any two snakes from Pandora's box at least one is a viper.

(2) The total number of snakes in Pandora's box is 99.

Bunuel I did this logic and got it incorrect. Can you please help me to find out the gap?

S1: From any 2 snakes at least 1 is viper- It means probability of getting viper can be 1/2 or 1

If probability is 1/2 for viper it is 1/2 for cobra. We have to discard probability 1 since at least 1 has to be cobra. But we do not know how many snakes are there in box. It can be 98 or 2- Insufficient

S2. There are 99 snakes- InsufficienT

S1+S2= Insufficient because no has to be integer and by 99 we get decimal

Ans: E

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