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 ?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

What runs around the whole yard without moving?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

How can you make number one disappear by adding something to it?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

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