Question

How many three digit numbers are divisible by 8

Answer 1

Answer:

800 is the 8digit number

Answer 2

first three digit number divisible by 8 is

104

992 is last 3 digit number divisible by 8

AP: 104,112..................992

a=104,d=8,an=992

using formula

an=a+(n-1)d

=≥992=104+(n-1)8

=≥992=104+8n-8

=≥992=8(13+n-1)

=≥992/8=12+n

=≥124=12+n

=≥124-12=n

=≥112=n

so the value of N is 112

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