exam Maths Puzzle Numerical Ability

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.

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exam Other Question
graph the equations:
y= 3/4 +2 (3/4 reads as three-fourths

2x + 3y = 6

2x - 3y = 12 show n!+1 and (n+1)!+1 is relatively prime. Hint: multiply n!+1 by (n+1). Thanks