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The number of ways in which three balls can be drawn from the box so that at least one of the balls is black is

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A box contains 2 white balls, 3 black balls and 4 redballs.

A box contains 2 white balls, 3 black balls and 4 redballs.

Three boxes contain respectively 3 white and 1 black, 2 whit

A box contains 4 red balls and 6 blackballs.

Three balls ar

Three balls ar

A bag contains 2 white balls, 3 black balls and 4 redballs.

Box 1 contains 15 balls out of which 3 arered.

Box 2 contai

Box 2 contai

A box contains 4 different black balls, 3 different red ball

There are two urns, one containing two white balls and four

A bag contains 4 red and 3 blackballs.

A second bag contain

A second bag contain

Statements:All red arewhite.

Some black arered.

No white is