Best easy riddles

I’m the end of the colourful rainbow. What am I?

In a jungle where there is no streets lights or any other artificial source of lights, I notice a black snake crossing the road. How did I get sight of snake ?

There are 2 ducks in the front, 1 in the middle, and 2 in the back.... How many are there in total?

What kind of animal lives longest in zoos?

I don't have wings, but I can fly. I don't have eyes, but I will cry! What am I?

I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?

I have a little tail. My nose is called a snout. I live on a farm. I can say, "Oink-oink" I am a...

A train leaves from Halifax, Nova Scotia heading towards Vancouver, British Columbia at 120 km/h. Three hours later, a train leaves Vancouver heading towards Halifax at 180 km/h. Assume there's exactly 6000 kilometers between Vancouver and Halifax. When they meet, which train is closer to Halifax?

What rock group has four men that don't sing?

What can run but can't walk?