Question

how many three digit numbers are divisible by 11

Answer 1

The maximum 3 digit no. Is 999 when we divide it by 11 the remainder is 9 . So 999-9 =990. So clearly 990 is the maximum 3 digit no. Divisible by 11 . Hope it will help u . Thanku

Answer 2

hiii mate

hope this helps you

121,132,143,154,............,990

we have
a=121
d=132-121=11
l = 990
n=???

we know that
l=a+(n-1)d
990=121+(n-1)(11)
990=121+11n-11
990=110+11n
990-110=11n
880=11n
n=880/11=80

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