Find the missing letter in the last circle logically in the given below picture.

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?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

2, 3, 5, 9, 17, _ What is the next number in the sequence?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Find the hidden panda in the image below.

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?