exam Maths Puzzle Numerical Ability

Given B= {xI1 less than or equal to x less than or equal to 5 and x is even }

(Sorry I cant input the right symbols)

A. (1,2,3,4,5)
B. (2,4)
C. (2,3,4)
D. ()

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exam Other Question

please Indicate whether the problem is true or false but show all work thanks
sin 0(with a dash through it) = cos (90-0(with a dash through it)) Brandon goes on a ACaub Scout hike and hikes to a waterfall in 3 hours and hikes back along the same route to the compground in 2 hours. If the hiking rate is 1mph faster returning than going, how fast are the boys hiking each way?