How do you go from 98 to 720 using just one letter?

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 ?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

In the image below, can you find the value of an angle(y)

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?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Can you find the dog hidden in a group of pandas?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?