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Maths Puzzle
Numerical Ability
4+2(x-8)
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The function h(C)=331+3/5C represents the speed of sound, h, in meters per second, where C is the teperature in degrees Celcius. The Celcius temperature C can also be expressed as
How does one prove: If C is an infinite set and B is a finite set, the CB is an infinite set? I can do the proof if B = null set, but I get lost if B intersects C. If B has n e