2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

what does this below rebus represent identXQQQQQME

Can you replace the question mark with the correct number?

What can go up a chimney down, but can’t go down a chimney up?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What's the best place to go shopping in the ocean?