Can some one pls help and have a blessed day

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

Divide. write in simplest form 41/6 divided by 10

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