TASK DEFINITION: In this task, you need to count the number of times the given letter appears in the given sentence.
PROBLEM: Sentence: 'a bunch of green bananas is hanging on a tree'. Find frequency of the letter 'n'

SOLUTION: 7

PROBLEM: Sentence: 'hotel towels with sunglasses perched and hotel business cards and catalog'. Find frequency of the letter 'o'

SOLUTION: 4

PROBLEM: Sentence: 'motorcyclist meeting with one another before a ride'. Find frequency of the letter 'o'

SOLUTION:
5