Answer:
Step-by-step explanation:
If we choose chairs having odd number in the row
no of chairs from which selection is made = 10
no of chairs to be selected = 5
no of ways = 10C₅
similarly if we choose hairs having even numbers only ,
similar to above , no of ways
= 10C₅
Total no of ways
= 2 x 10C₅
= 2 x 10 x 9 x 8 x 7 x 6 / 5 x 4x3 x 2 x 1
= 504 .
The answer would be letter B
4 is a number That u use to count with or something g sorry gotta be more spiscific
2. ___________
|. X|. X|. X|. |. 6/8
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|. X|. X|. X|. |
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___________
|. |. |. |. |__x,x,x
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|. X|. X|. X|. |. 6/8-3/8=3/8
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