exam Maths Puzzle Numerical Ability

Solve this inequality: x/4 < -5 Note there is a line under the greater than sign

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exam Other Question

how do you know exactly when the problem is a combination or a permutation?
how do you label the problem? ex. 4 super script c 3? how do you solve these? Simplify -4/x^2-2x-15 minus 2/x-5