All Important Concepts in One Shot#!#All Important Question Practice in One Shot

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Solid Figures|All formulas in One Shot|Questions

Solid Figures|All formulas in One Shot|Questions

There are 3 columns of balloons.In how many ways was all the balloons can be shots.Balloons are hanging from the ceiling,so the lower balloon has to be shot first.One has to shoot all 12 balloons.