A seven digit number is formed using digits 3,3,4,4,4,5,5. The probability, that number so formed is divisible by 2 is

No. Of 7 digits number using 3,3,4,4,5,5  =⌊7⌊2⌊3∣2To get divisible by ‘2’, Digit in units place must be 4°=16⌊2⌊2∣62 Required probability =16⌊2⌊2∣27¯|2|3∣2=37