I have branches, but no fruit, trunk or leaves. What am I?

Can you count the number of triangles in the given picture?

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 ?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

Can you find out the remainder when 3^300 is divided by 5?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

What statement did the journalist make to survive?

I am sure no one can have two things for dinner. what are they?

What is the next number in this series?

4,12,84,3612....

Find the next number in the sequence

1, 2, 6, 21, 88, __?