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

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

Can you replace the question mark with the correct number in the below table sequence?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

I have no life, but I can die. What am I?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

I am lying and I always lie. Tell me whether I am lying or telling the truth.

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?