exam Maths Puzzle Numerical Ability

Determine whether the following is rational or irrational:

4-sqrt16

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exam Other Question

Convert to exponential form. For example, the exponential form of "log5 25 = 2" is "52 = 25".

log 3 27 = 3 A maintenance crew requires between 30 min and 45 min to prepare an aircraft for its next flight. How many aircraft can this crew prepare for flight in a 6-hour period of time?