Math, asked by sachin991131, 1 year ago

how many 4 digits number in number system

Answers

Answered by wwwvijaymishra73013

2

t1=a= 1000
tn=9999
d=1
we know that tn=a+(n-1)d
9999=1000+(n-1)1
8999=n-1
9000=n
therefore there are 9000 nos
.....

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