In this task, you need to count the number of times the given letter appears in the given sentence.

Q: Sentence: 'a baby calf has a tag on its right ear'. Find frequency of the letter 'n'

A: 1
****
Q: Sentence: 'a young boy bouncing a tennis ball on a tennis racquet'. Find frequency of the letter 'a'

A: 5
****
Q: Sentence: 'a group of people in a room having a gathering'. Find frequency of the letter 'i'

A:
3
****