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

2 Answers

3 votes

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

User Niloofar
by
4.6k points
6 votes


\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*25*24*23}


\mathsf{26* 25 = \bf 650}


\mathsf{650*24*23}


\mathsf{650*24 = \bf 15,600}


\mathsf{15,600* 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:)}

User MyICQ
by
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