ayannasingh ayannasingh

06-12-2020
Mathematics

contestada

How many 4-digit numbers can you write if you are not allowed to use any other digits except one and two?

Respuesta :

umasankari600 umasankari600

06-12-2020

Step-by-step explanation:

ans = 1212 ,2121,2222,1111,2211,1122

Answer Link

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