Answer:
When is 1500 plus 20 and 1600 minus 40 the same thing?
What has thousands of ribs and two backbones?
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
Who has married hundreds but always been single?
I am million people's wakeup call. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?