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Maths Puzzle
Numerical Ability
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Bob is moving and all of his CDs are mixed up in a box. Twelve CDs are rock, eight are jazz, and five are classical. If he reaches in the box and selects them at random, find each possibility.
What is the possibility of 3 rock cds?
State whether each statement is true or false and explain your answer.
1. There is exactly one point L on line MC such that ML=3.
2. There is exactly one point L on line MC such that ML =1/2MC