There is at least one red ball and at least one blue ball in a box. How many blue balls are there?
(1) From any two balls from the box, at least one is a red ball.
(2) The total number of balls in the box is 99.
Please answer with explanations.
From question we know that we have atleast 1 Red ball and 1 Blue ball.
Stem 1: If we pick any two balls, one is red or both are red. what does it mean? this can happen only if there is only 1 blue ball.
Stem 2: Total number of balls is 99. Doent help us to reach anywhere. Not sufficient.
Hence Ans A it is.
hope it helps.
At least one red ball and One blue ball means at least one ball of each type (but there can be more) from the Q. stem
Can we infer from Statement 1 that there are only 2 balls in the box.
There can be any no. of Balls in the box. But, At least one means surely there will be one but can be more of same type.
If i say I have atleast 100US $ doesn't that mean that surely I have US $ 100 but might have more but not less.
Is my understanding correct??
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