exam Maths Puzzle Numerical Ability

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Solve the following system of equations:
5X + 8Y = 1 and 3X - Y = -8

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exam Other Question

calculate the missing frquency from the following distribution , it being given that the median of the distribution is 24. P1=(2,-5)
P2= (5,4)

d(P1,P2)=

answer using radical as needed