What is the next number in the series?

15 29 56 108 208 ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

When we see 2 but call 10?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

Make a sentence consisting of three words that have the whole alphabet.

What number when divided in half becomes zero?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?