Question

How many ways can the letters be arranged?

TJKL

A) 10 ways
B) 16 ways
C) 18 ways
D) 24 ways

Answer 1

The answer is D.

4 x 3 x 2 x 1 = 24 ways

This can be quickly worked out on your calculator using the ' ! ' button after inputting the number of letters/numbers.

You can always check as well, by simply working out every single way.

Answer 2

TJKL - different letters

for the first place you have 4 letters to choose from

for the second place you have 3 letters to choose from

for the third place you have 2 letters to choose from

for the last place you have only one letter

Therefore your answer is:

$\boxed{4}\cdot\boxed{3}\cdot\boxed{2}\cdot\boxed{1}=24\to\boxed{D)}$