Questions

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

                   n(n-1)/2 = 6

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 

Karnataka CM Siddaramaiah has inaugurated the upgraded version of police helpline Namma 100, where police officials will be deputed within 15 minutes to the spot of emergency, for Bengaluru. Based on the model adapted in London, which has helpline 999, and USA, where 911 helpline operates, Namma 100 helpline allows the public to access several facilities on a single number.

F9 keystroke is used for updating a field.

The playground of baseball is known as Baseball Diamond or the ball field.

In 1814, George Stephenson developed steam engine to haul coal from mines to ports by railways. In 1830, the first railway train began to carry passengers and freight from Liverpool to Manchester.