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How many 3-digit numbers do not have an even digit or a zero
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21 Apr 2018, 05:03
21 Apr 2018, 05:03
Expert Reply
00:00
Question Stats:
88% (01:16) correct
11% (01:34) wrong based on 17 sessions
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How many 3-digit numbers do not have an even digit or a zero?
(A) 20
(B) 30
(C) 60
(D) 80
(E) 125
(A) 20
(B) 30
(C) 60
(D) 80
(E) 125
Re: How many 3-digit numbers do not have an even digit or a zero
[#permalink]
24 Apr 2018, 01:50
24 Apr 2018, 01:50
2
There are altogether \(10\) digits \({0,1,2,3,4,5,6,7,8,9}\) for a single place for any number
For three digit numbers there are altogether \(3\) places Since we cannot use \({0,2,4,6,8}\) the three digit number has
to be composed from \({1,3,5,7,9} = 5\) digits hence total number \(= 5*5*5 =125\)
option E
_________________
For three digit numbers there are altogether \(3\) places Since we cannot use \({0,2,4,6,8}\) the three digit number has
to be composed from \({1,3,5,7,9} = 5\) digits hence total number \(= 5*5*5 =125\)
option E
_________________
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