John is found dead in his office at his desk. The police have narrowed the suspects down to three people: Mrs. Jacob, John’s wife Hena and his business partner Jason . All three visited John on the day of his murder, but all three provide the police with stories of explanation as to the reason for their visit.
Police found John with his wrist watch still on his right arm, a torn up picture of his wife laying on the floor beside the trash can, and an ink pen in his right hand. On the desk, the police found a name plate, a telephone that was off the hook, and a personal calendar turned to the July 5th page with 7B91011 written on it. After examining this evidence, the police knew their suspect. Who was it ?

You can see three almost identical images below. Can you spot the odd one out from them?

They are three errirs in this question. Can you find them?

What four weights can be used to balance from 1 to 30 pounds?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

How many times in a given day, minutes and hour clock comes in a straight line ?

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

Can you move 2 matchsticks to form four equal sized squares.

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?