11 diminished by five times a number is the same as four times a number increased by 20 find the number

The probability of winning something on a single play at a slot machine is 0.11. after 4 plays on the slot machine, what is the probability of winning at least once

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?