Out of 7 consonants and 4 vowels how many word of 3 consonants and 2 vowels can be formed

Idont get this question can someone me solve it? ** the distance light travels in one second (1 light second) is about 1.86 ×10^5 mi. saturn is about 475 light-seconds from the sun. about how many miles from the sun is saturn..my guess is 8.83* 10^7 you so much

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

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