Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

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.

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Solve the counting riddle by identifying the number of triangles in the given picture.

Which tank will fill first?

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

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

What Word am I Looking For ?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?