exam Maths Puzzle Numerical Ability

find the z score that separates the middle 63% of the distrubution from the area in the tails of the standard normal distribution
The z scores are___

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exam Other Question

FIND THE DOMAIN OF THE FUNCTION.
f(x)= 2 over x+7
Please help me.

What is the real value of x in the equation: log2(24) - log2(3) = log5(x)

thanks