10≤n<100
So the number of two digit numbers is 99-10+1=90
The only combinations that sum to 5 are 14, 23, 32, 41, 50 so
P(sum=5)=5/90
P(sum=5)=1/18
Answer:

Step-by-step explanation:
We want to evaluate:

This is the same as:

We integrate to obtain:

We evaluate to obtain:

Answer:
See attached picture.
Step-by-step explanation:
Answer:
(-1,-1)
Step-by-step explanation:
4-6 3-5
------- , ---------
2 2
(-2/2,-2/2)=(-1,-1)