How can one talk without saying a single word?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Can you identify the hidden rebus in the image below?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

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?

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

Can you find the missing piece of the Porsche?