What's the next in the series?

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

Can you divide the below-given shape into four equal and identical pieces?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Solve below rebus puzzle?

There are two beautiful yet remote islands in the South Pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?

If 1+9+8=1, what is 2+8+9?

Can you start the fire using two pieces of wood?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

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

Can you find out who is the kidnapper in below Picture and why, Explain ?