Answer:
For each part, find how many numbers have the stated characteristic, then divide by 21.
e.g. multiples of 5:
these would be 10, 15, 20, 25, and 30
so prob (a multiple of 5 ) = 5/21
Do the others the same way
Answer:
1. Yes
2. Yes
3. No
Step-by-step explanation:
(b)
A polynomial has the form

± 
+ ....
the only expression fitting this description is : x² + 2x + 7
6+1ty is the best thing to do with this