What can you see in the middle of March and April that you can never see in any other month?

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.

Can you find the six hidden animals in the picture below?

Guess the hidden movie name?

How many triangles can you count in the figure given?

Take one out and scratch my head, I am now black but once was red. What am I?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

Count the number of triangles in the picture below:

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Can you find out the remainder when 3^300 is divided by 5?