Six boxes P, Q, R, S, T and U are kept one over the other but not necessarily in the same order. P is kept third from the bottom. Only two boxes are kept between P and Q. Only three boxes are kept between Q and R. S is kept immediately below R. T is kept immediately below Q.

How many boxes are kept between U and S?

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  1. Three
  2. Two
  3. Zero
  4. One

Answer (Detailed Solution Below)

Option 2 : Two
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Detailed Solution

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Given: Six boxes P, Q, R, S, T and U are kept one over the other

1) P is kept third from the bottom.

2) Only two boxes are kept between P and Q.

Sr.no Boxes
Top
1 Q
2  
3  
4 P
5  
6  
Bottom

3) Only three boxes are kept between Q and R.

4) T is kept immediately below Q.

Sr.no Boxes
Top
1 Q
2 T
3  
4 P
5 R
6  
Bottom

5) S is kept immediately below R.

After positioning S only one position is left which will be occupied by the only box left i.e. U. 

Sr.no Boxes
Top
1 Q
2 T
3 U
4 P
5 R
6 S
Bottom

Thus, according to the final arrangement two boxes are kept between U and S.

Hence, "Option 2" is the correct answer.

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