Please help me!!

On a recent international flight, there were 24 Jamaicans and 38 passengers from elsewhere
What is the probability that a randomly selected passenger from this flight is Jamaican?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

What is the lcm of 16 and 40 ? 24 and 40 ?

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