Question

how many 3 digit numbers are there between 100 and 900

Answer 1

Answer:

Step-by-step explanation:

Let A.P = 100,101,102,...........900

d=1

a =100

an= 900

an = a+(n-1)d

900 = 100 + (n-1)1

800 = n-1

n = 801

Answer 2

Step-by-step explanation:

The number 3 digit numbers between 100 and 900 is 799.

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