Question

what is that which comes ones in a year and twice in a week

Answer 1

The complete question is 'Which thing comes once a year twice a month four time in a week and six time in a day?' It can be either letter 'E' or it's the odd numbers. '6' In a Day, there are 6 ODD hours.- take day hrs in 12hr format,not in a 24 hr format.

Answer 2

That comes once in the word " year" = all words y, e, a and r too. These are once once letter
But it is given once in year and twice is a week
That means
In week = " e" is twice
In " year" = "e" is once
So "e" is the answer.