exam Maths Puzzle Numerical Ability

E and F are independent with P(E) = 0.35 and P(F) = 0.45.

P(E � F) =_______

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exam Other Question

A boat moves 9 kilometers upstream in the same amount of time it moves 19 kilometers downstream. If the rate of the current is 9 kilometers per hour, find the rate of the boat in still water. I am thinking of three consecutive positive numbers. If I multiply the first with the third and then add the second, the result is 41. Let x be the smallest number