One thing will come yearly once monthly twice weekly four times16 times in a day what is it?

' ODD ' numbers.

'6' In a Day, there are 6 ODD hours.- take day hrs in 12hr format,not in a 24 hr format.

(1),2,(3),4,(5),6,(7),8,(9),10,(11),12 - 1,3,5,7,9,11 are 6 odd numbers.

'4' In a Week, ther are 4 ODD days. - you know that there are 7 days in a week.

(1),2,(3),4,(5),6,(7) - 1,3,5,7 are 4 odd numbers.

'2' In a Month, there are 2 ODD weeks. - you know that there are 4 weeks in a month.

(1),2,(3),4 - 1 & 3 are 2 odd numbers.

'1' In a Year (12 months), there is 1 ODD - you konw that 12 months are in year.take number 12 of months.

(1),2 - 1 is 1 odd number