The break-even point is given when:

In another words, when the costs are equal to the revenue. If this happens, the profit will be equal to 0. From the graph, the profit is equal to 0 for 60,000 units.
Answer:
B
Answer:
The answer is 34, bec what you do is: 67 - 33.
The rule is adding 5 if we say n is 2 then nth term is
n + 5(or so I hope )
Answer:
There are 35990 ways in which 2 or 3 nodes fail
Step-by-step explanation:
Given : A computer network has 60 switching nodes.
To Find : In how many ways can 2 or 3 nodes fail?
Solution:
We are supposed to find no. of ways can 2 or 3 nodes fail.
So, we will use combination here .
No. of ways can 2 or 3 nodes fail=
Formula : 
No. of ways can 2 or 3 nodes fail=
=
Hence there are 35990 ways in which 2 or 3 nodes fail