We will use the concept of algebra to answer the given questions.
The rule for the pattern of letter L is the same as the rule for letters T and V that is 2n.
Here 'n ' represents the number of letters.
The rules are the same because the number of sticks required in the
formation of the above letters is the same i.e 2.
These letters give the same rule as that given by L
The rule for the pattern of letter C is the same as the rule for letter Z and U
i.e 3n as these letters have three matchsticks.