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

Find the missing letter in the last circle logically in the given below picture.

There are two beautiful yet remote islands in the South Pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?

Find the number of squares in the below picture

Move three sticks of the spiral below to form a square.

What is the next number in this series?

4,12,84,3612....

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Can you find the mistake in the below statement?

People put me on the table and cut me but do not eat me. What am I?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?