Boys: girls are in the ratio 3: 4 if there are 12 boys how many girls?

Leo is going to use a random number generator 4 0 0 400 times. each time he uses it, he will get a 1 , 2 , 3 , 4 , 1,2,3,4, or 5 5. what is the best prediction for the number of times that leo will get an odd number?

Which of those sequences is a geometric sequence

Can someone answer this question? : )