What does this mathematical rebus means ?

What have one eye but still cannot see?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Can you find the hidden animal in the picture below?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?