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How many 4 digit no arevthere …

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How many 4 digit no arevthere with no digit repeated
  • 6 answers

Amrit Kaur 7 years, 2 months ago

9×8×7×6

Vishal Pathak 7 years, 2 months ago

8×8×7×6=2688

Luna Crystal 7 years, 2 months ago

=10P4 - 9P3 =[10!/(10-4)!] - [9!/(9-3)!] =(10×9×8×7)-(9×8×7) =9×8×7(10-1) =9×9×7×8=4536

Ananya Chaturvedi 7 years, 2 months ago

It would be 9*9*8*7=4536

Sweta Kumari 7 years, 2 months ago

Total number 0,1,2,3,4,5,6,7,8,9=10digit

Sweta Kumari 7 years, 2 months ago

7,8,9,1=504 answer
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