exam Maths Puzzle Numerical Ability

Calculate the speed of the following:
A man runs 1000 metres in 184 seconds (calculate his speed in kiometres per hour)

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exam Other Question

Which term prevents the following expression from being considered polynomial?

F(x)= 1/√2 x^4-1/√5 x^3-7x^-2+1.4x+21

A. -7x-2
B. 1/√2 x^4
C. -1/√5 x^3
D. 1.4x
E. 21 Hi. Can someone please help me? I need to solve these arguments using the 18 rules of inference. I'm stuck on these 4.

I. 1) [A horseshoe (B v C)] horseshoe (D horseshoe A)