exam Maths Puzzle Numerical Ability

The square of a certain number is the same as three times the number.What is the number?

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exam Other Question

1. As the width of a confidence level increases, the lower bound ________ and the upper bound ________.

2. The batteries used in a digital watch have an operating life Speed of an airplane in still air is 255 km/h. plane travels 675km against wind and 1449 km with the wind in a total of 10 hr. What is the speed of the wind?