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in Mathematics by (71.2k points)

The no of 9 digit numbers formed using the digit 223355888 such that odd digits occupy even places is _______

(a) 16 

(b) 36 

(c) 60 

(d) 80

1 Answer

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Best answer

Correct option: (c) 60

Explanation:

Arranging odd number 3355 at even places = 4!/2!2! = 6

arranging even numbers 2,2,8,8,8 at odd places = 5!/3! = 10

∴ Total numbers = 6 x 10 = 60

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