Question

हाउ मेनी थ्री डिजिट नंबर डिविजिबल बाय 5
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Answer 1

Answer:

first no. 100 as it is three digits and divisible by 5

now lets us take from ending so 995 is the largest three digit no. divisible by 5.

so, d=5

an=995

a=100

We need to calculate n

an=a+(n-1)d

995=100+(n-1)5

995-100 =(n-1)5

885/5=n-1

177+1=n

178=n

hence there are total 178 three digit numbers which is divisible bye 5