Why is 6 afraid of 7?

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

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Can you count the number of children in the picture below

Can you find the mistake in the below statement?

Where do fish keep their money?

Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()