If $12$ students scored $20$ marks in a test , then frequency of $20$ marks is _______ .

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Solution

Explanation:
It is given that $20$ marks is scored by $12$ students which states it's frequency .
Hence,it's frequency is $12$ .

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If 12 students scored 20 marks in a test , then frequency of 20 marks is _______ .

Explanation:It is given that 20 marks is scored by 12 students which states it's frequency .Hence,it's frequency is 12.

If $12$ students scored $20$ marks in a test , then frequency of $20$ marks is _______ .

Explanation:
It is given that $20$ marks is scored by $12$ students which states it's frequency .
Hence,it's frequency is $12$ .