How many different non-digit numbers can be formed from the digits of the number 223355888 by rearrangement of the digits so that the odd digits occupy even places?
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a
16
b
36
c
60
d
180
answer is C.
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Detailed Solution
In a nine digits number, there are four even places for the four odd digits 3, 3, 5, 5..'. Required number of ways =4!2!2!⋅5!2!3!=60