exam Maths Puzzle Numerical Ability

.018 + 3square root .018(1-.018)/300

I tried .018 + 3 sq.root .018(.982)/300
.018 + 3 sq root .017676/300
.018+3 sq root .000058

teacher gives answer of .041
how do I get there

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exam Other Question

A covered urn contains red, white, black, and green marbles. A player received $2.00 if he draws a red marble, $1.50 if he draws a white marble, $3.00 if he draws a black marble. T Suppose that lines l and m have a common perpendicular n which intersects l at the point A and m at the point B.

Prove that for any point P on l, there exists a point Q on l suc