what does the below rebus means?

what does the below math rebus puzzle mean?

I know a nine-letter word having only one vowel.
Do you ?

What does this rebus means ?

PROG WORKRESS

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What number comes next in the series?

5 15 5 18 5 24 14 20 _