What does this mathematical rebus means ?

When 99 is considered higher than 100?

What number when divided in half becomes zero?

Thomas has missed an excessive number of days of school, so he must meet with Principal Davis. Mr. Davis asks him "Why on Earth have you missed so many days?" Thomas replies "There just isn't enough time for school. I need 8 hours of sleep a day, which adds up to about 122 days a year. Weekends off is 104 days a year. Summer vacation is about 60 days. If I spend about an hour on each meal, that's 3 hours a day or 45 days a year. I need at least 2 hours of exercise and relaxation time each day to stay physically and mentally fit, adding another 30 days. Add all of that up and you get about 361 days. That only leaves 4 days for school." The principal knows Thomas is full of it, but can't figure out why. Where is Thomas going wrong?

A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were Monkeys.

Can you find out how many of each animals were present in that pet show?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

What work can one never finish?

What is at the end of a rainbow?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I