book Maths Puzzle Numerical Ability

How many different 6-digit numbers can be written using all of the following digits: 2,5,5,6,6,6 ?

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book Other Question

*patterns and inductive Reasoning*
fine the next three terms of each sequence

1) 6,8,12,18
2)3,-4,-11,-18
3)-11,-6,-1,-4
Sherloc holmes states , "if a rod of six feet threw a shadow of nine feet, a tree of 64 feet would throw a shadow of....." what length should Sherlock say next?