1. There are 9 blue marbles in a box. How many groups of 4 marbles are possible?
2. There are 12 boys in a class. In how many ways can they group
themselves by 6?
3. How many group of 5 red cards can be drawn from a deck of 12 red
cards?
4. In how many ways can 8 students seat in arrow of 5. chairs?
5. How many letters of the word GRACIOUS both begin and end with a
vowel?​

What is the value of the digit 1 in the number 13?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.