Can you solve this picture maths equation?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Why is Saturday stronger than Monday?

There is something which you can be arrested for attempting but not for successfully completing.

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 a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

On a beautiful Sunday morning, You ordered a hot tea to your hotel room and suddenly you remember an important thing that needed to be done right now will take around 3 minutes to complete.
Like most people you like your tea to be hot while drinking so, when should you pour cream in the tea?
1. straight away
2. Just people, you drink the team
3. Its does not matter