Iron deficiency. Most people get the majority of their iron intake through meats. However, it is not difficult to get, considering most vegetables contain iron.
The other thing you may encounter deficiency in is vitamin B-12, or omega 3, because those are found in only meat or eggs respectively. However these do not need to be taken in great quantities, and can be found easily in many vegan-oriented fortified foods. I use nutritional yeast for my B-12, and flax for my Omega-3.
The longest math problem I have encountered was a complex calculus problem that involved multiple steps and calculations. To solve it, I broke down the problem into smaller, more manageable parts and carefully followed the steps outlined in the problem. I used various mathematical techniques and formulas to work through each step until I arrived at the final solution.
The problem encountered in manual billing system is wasting time.
the problem is that they dont have problem...
??
What major problem have you encountered and how did you deal with it?
I Dont Know
Depends on your methodology
no
the problem is getting home
vacuum deflation
File compression
very carefully