How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

What Does this text mean:

important=important

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Why is Saturday stronger than Monday?

Can you write down eight eights so that they add up to one thousand?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?