How many 3 digit numbers are divisible by 8
Asked by admin @ in Math viewed by 338 People
How many 3 digit natural numbers are divisible by 8 ?
Answered by admin @
Three digits natural no. divisible by 8 are 104,112.....992 which form of an A.P in which a=104 , d = t2-t1 = 112-104 =8 , tn= 992
tn= a+(n-1)d
992 = 104+ (n-1)8
992-104= (n-1)8
888/8=(n-1)
111=(n-1)
n=111+1
n=112
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