a Math puzzle for you (edit for the math questions as different sites are giving different answers)

For those of you that don't like math, I have also added a non-math related puzzle

Normal Rules apply:
Do not leak, post answers, suggest hints, or directly link to the prize/giveaway.

This is the first giveaway being produced by Evil Puzzles -Я- Us. We will be randomly doing puzzles with giveaways from now on, but we can't promise they will be happening a lot. Enjoy the puzzle and have fun if you win. It's a short puzzle and shouldn't be too hard.

Group members may enter, as I did not make it with their help, and they will not get help from me that the rest of the community isn't getting also.

If you are stuck on a question, leave a comment or add me on steam and let me know which one. I'll try to help out the community if people are stuck on a particular one.

The game isn't anything big, and there is no contribution value required.

Giveaway ends at midnight on March 1st Tokyo time.

first task, find the giveaway

HINTS

questions 2 & 3 Go to 16 decimal places

For question 3, ... and ..., replace ... with your numbers.

after talking with a few people, we have come to the conclusion that some sites give different answers as it gets into the deeper decimal places. For number 2, the site I used made it a 6 at the end, not a 9. If you get it wrong, try changing the last digit to a 6.

for number 3, part one make it a 2 not a 6, and for part 2 make it 88 and not 97

We don't know why different sites are so different, but they are. This should solve any problems with it.

big thanks to g00u and ludijak for helping me figure out what was going wrong with it.

please bump if you solve it