Question

Jim wants to make a 4 letter password. He cannot repeat any letters in his password.How many combinations can he make

Answer 1

My previous answer was incorrect, sorry for that... the correct answer would be 358,800

Answer 2

$\huge\text{Hey there!}$

$\large\text{He has 26 letters all together (A - Z)}$

$\large\text{25 if he starts from his second letter (B - Z)}$

$\large\text{24 if he starts from his third letter (C - Z)}$

$\large\text{ 23 if he starts from his fourth letter (D - Z)}$

$\mathsf{26\times25\times24\times23}$

$\mathsf{26\times 25 = \bf 650}$

$\mathsf{650\times24\times23}$

$\mathsf{650\times24 = \bf 15,600}$

$\mathsf{15,600\times 23}$

$\mathsf{ =\bf 358,800}$

$\boxed{\boxed{\large\text{Answer: \huge \bf 358,800}}}\huge\checkmark$

$\text{Good luck on your assignment and enjoy your day!}$

~$\frak{Amphitrite1040:)}$