I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Solve below popular number sequence
314 159 265 358 979 323 846 ?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

If 21x = 79x, what is the value of x?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Solve the following series:
AZ, GT, MN, __, YB

What can you see in the middle of March and April that you can never see in any other month?