Brain Test Level 62 What occurs twice in a week

Daze Puzzle provides a complete walkthrough for "Brain Test Level 62: What occurs twice in a week, once in a year and never in a month?".

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Question
What occurs twice in a week, once in a year and never in a month?
Hints
Hint 1:
Look at the words themselves. Answer a letter.
Step 1
Answer
The answer is letter “E”. wEEk: the letter ‘e’ comes twice. month: the letter ‘e’ never comes. yEar: the letter ‘e’ comes once.