What is more useful when it is broken?

What is common among 11, 69, and 88?

Why do Chinese men eat more rice than Japanese men do ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

What has one eye, but can’t see?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.