jayberkinov jayberkinov

15-04-2020
Mathematics

contestada

How many six-digit passwords can you create if you use only numbers 1,2,3,4,5,6,7,8,9 without repetition?

Respuesta :

iseguanb iseguanb

15-04-2020

Answer:

60480

Step-by-step explanation:

total number (n) = 9

r = 6

9P6 = 9!/(9-6)!

= 9×8×7×6×5×4×3!/ 3!

= 3! cancels out

= 9×8×7×6×5×4

= 60480

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