How is a fly different from a mosquito?

In the image given, you can find several triangles. Can you count them all?

What jumps when it walks and sits when it stands?

What word does this rebus represent?

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Rearrange the letters in "new door" to make one word.

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

What does the below rebus puzzle mean?

A rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?