tracyrickyjones tracyrickyjones

19-09-2022
Mathematics

contestada

determine how many different possibilities for two-digit numbers 1,5,3,6,9

Respuesta :

surjithayer surjithayer

19-09-2022

Answer:

Step-by-step explanation:

unit place can be selected in ways=5

ten's place can be selected in ways=5

total numbers=5×5=25

but if the numbers at two places is different then number of ways=5×4=20

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