I have eight fingers and two thumbs but I do not live. What Am I?

How can one talk without saying a single word?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

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?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

What does the below rebus puzzle mean?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?