Math, asked by AdityaRay, 1 year ago

how many 4 letter code can be formed using the first 10 letters of the english alphabet, if no letter can be reapeted

Answers

Answered by ShaKiRKhaAN

1

20... is the probability..

Answered by Brainergy

1

by counting principle answer = 10x9x8x7 = 90x56 = 5040

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