Does anyone know how to do this? if so, can you explain?

Ajar of gumballs contains 4 reds, 2 greens, and 6 blues. what is the probability of getting two blues in a row without replacement?

Why is x= 4 a solution to the proportion 14/x 56/1 6

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read