What is the next number in the series?

15 29 56 108 208 ?

what does the below math rebus puzzle mean?

If two's company, and three's a crowd, then whats four and five ?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

I have branches, but no fruit, trunk or leaves. What am I?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!