What has one letter and starts with an E?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Count the number of squares in the picture below.

Can you find the key in the picture below?

What kind of band never plays music?