how many 4 digit natural numbers not exceeding 4321 can be formed with the digits 1,2,3,4 if digits can repeat?
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Answer:
256 digits can be formed
Step-by-step explanation:
The largest no.formed from following digits is 4321
so we can arrange them in any ways
No.s on unit place = 4 digits ( i.e 4,3,2,1 )
No.s on tens place = 4 digits
No.s on hundred place = 4 digits
No.s on thousand place = 4 digits
So, the total no. of digits form = 4×4×4×4
= 256 digits
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