IV. Answer the following questions : 2x5=10
20) Draw a circle of radius 3cm from the point P, which is 8cm away from its
centre. Draw the two tangents PA and PB to the circle and measure their
lengths. (Geometry)
21) Find the nature of solution of the following equation x²+x-12=0. (graph).
pls help anyone
I am giving 10 points...

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244