Fighter28 wrote:
I think this is a poor-quality question and the explanation isn't clear enough, please elaborate. Statements in question are ambigious. To ans DS question statements must be clear.
Took me a couple of minutes to get it. It helped me to think about it as a probability question:
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.
Rephrase this statement to: You grab 2 snakes out of the box (without replacing the first snake).
The probability of grabbing two cobras is zero.
==> only one cobra in the box
Great question B!!