Questions

The areas are generally divided into three groups:

* street fashion (mass-manufactured high fashion);

*ready-to-wear (small collections);

* haute couture, where unique cat-walk garments are created mostly without practical considerations.

Don’t try to impress employees with what you are not. If you are an expert in high street fashion – you will be appreciated and find plenty of work.

The missing number in the given number puzzle is "78".

Here the logic is the numbers are from 86 - 91 when we read upside down.

From the hints,

Only two options for 1st and 2nd digits => 4,2 and 9,3 since it is single digits

Sum of second and third digit  = 10 

If 2 => 3rd digit = 8

If 3 => 3rd digit = 7

4th digit = 2nd digit + 1 => (2+1 =3) or (3+1 = 4)

Sum of all digits = 30

Let 5th digit be x

=> 1st possibility = 4 + 2 + 8 + 3 + x = 30 => x = 13 (Not possible since it has 2 digits)

=> 2nd possibility = 9 + 3 + 7 + 4 + x = 30 => x = 7

Therefore, the PIN is 93747 

Number of spectral lines from a state n to ground state is

                   n(n-1)/2 = 6