exam Maths Puzzle Numerical Ability

I need help in finding the solutions to x^2+2(pie)=0.

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exam Other Question

A bag contains two white marbles and one yellow marble. The marbles are randomly selected one at a time. What are the odds of picking the yellow marble on the first selection? 3/4 -8 +3 second power
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-2

My answer came to be a 3. Can you please let me know if this is correct.

Thank-you,