Replace the question mark with the number below given a simple math problem.

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

What is the next number in this series?

4,12,84,3612....

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

I travel all around the world but always stay in the corner. What am I?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10