GUYS WATCH OUT MYSTERIOUS MEN HAS A NEW ZOOM THE CODE IS 74003788918 HE WILL ASK U TO SHOW UR BODY IF UR A GIRL THE PASSWORD IS BX1ytU BE CAREFUL GIRLS

What is the missing constant term in the perfect square that starts with x^2 -20x

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

Pls the last one and it has to be like number 6