There are two sets that would make odd result - e+o+e in this the order would matter.

So 1)eeo 2)eoe 3) oee probablity would be 1/8 each.

Noe another pair is ooo in this ordder wont matter. So its 1/8 again. Total 1/8+1/8+1/8+1/8 that is 1/2

Anither approach however would be.. There are 50 odd and 50 even no. Total 4 combi possible

Evn evn evn,

Od od od,

Even odd odd,

Evn evn odd,

Two of these sets would make even no. And another two would make odd.

So simply the probablity is 1/2

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