exam Maths Puzzle Numerical Ability

show n!+1 and (n+1)!+1 is relatively prime. Hint: multiply n!+1 by (n+1). Thanks

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exam Other Question

Evaluate, the radical expression if possible.
√4/5
This is suppose to be a radical sign √ but this is as close as I could get. Solve the equation 4^(2x+1)=2^(3x+6).

Thanks.