exam Maths Puzzle Numerical Ability

how do i solve 1/3 the square root of 45 kind of like this 1/3(45

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exam Other Question

For a test of 8 true/false questions,Maria was curious about the following if she would answer every question by guessing. Determine
A) The probability of getting the first three
Can someone help me solve this problem?

I need to multiply:

(-6) in the power of 2 - 4 in the power of 2

Thanks,
Lyn