How many times can you subtract the number two from the number fifty?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

What is more useful when it is broken?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

If you say my name, I will no longer exist. What am I?

What demands an answer, but asks no questions

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?