exam Maths Puzzle Numerical Ability

Find the amplitude if it exists and the period of y=tan 1/4 (0(origin of zero)

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exam Other Question

A student spent 1/5 of her pocket money on snacks, 1/4 on transport and 1/8 on club fees. What fraction of her pocket change was left?

1/5 + 1/4 + 1/8 = 23/40

Do not know where to go from here.
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Write the equation of the line L satifying the given geometric conditions.