Under what circumstances is one plus one equal to 99?

Under what circumstances is one plus one equal to 99?

In the case that one plus is wrong again and again, it is equal to 99, or in the case that one plus is wrong again and again, it is equal to 99, or in the case that one plus is wrong again and again, it is equal to 98, or in the case of one plus is wrong again and again, it is equal to 99

1 + 1 = how much is one plus one

The common answer is:
two
3 - Men + women (after October)
Wang Yi + Yi
The combination of Tian 1 + 1 and = in Chinese characters

1 + 1 =? How much is one plus one? That's all

2