Can you fill the blank with the correct number?

6 30 870 756030 _____

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

What does it mean?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

How many triangles are there in the picture below?