Published by:
CGP EDU Academic Team
Published on: August 14, 2026
A nine-digit number is formed using the digits 1,2, 3, 5 and 7. The probability that the product of all digits is always 1920 is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Total cases = 5 9
1920 = 5 x 3 x 2 7
Favorable cases = no. of ways of arrangement of 5, 3, 2,2, 2,2, 2,2, 2 in a row = 
hence, required probability = 
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