exam Maths Puzzle Numerical Ability

How do you draw a ying yang with a Compass?

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exam Other Question

How many solutions does cosecant squared of x = 25 have? How do you find it? find the value of "a" and "b" so that the system of the of equation
2x+3y+5z=9
7x+3y-2z=8
2x+3y+az=b has
1)no solution
2)a unique solution
3)an infinite number of solution