What goes up but never comes down?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What is the word or phrase?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

What does this rebus means ?

PROG WORKRESS

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

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?