M sits third from one of the ends of the row. J is sitting second to the left of M and not sit in the end of the row.

Two people are sitting between J and K, who is not sitting at any end. One person is sitting between K and L. Three people are sitting between L and N.

Q is sitting immediate right of P. Q and M is not facing south. 

Final arrangement

Q is third to right of L

M sits third from one of the ends of the row. J is sitting second to the left of M and not sit in the end of the row.

Two people are sitting between J and K, who is not sitting at any end. One person is sitting between K and L. Three people are sitting between L and N.

Q is sitting immediate right of P. Q and M is not facing south. 

Final arrangement

All except NO have one person between them.

M sits third from one of the ends of the row. J is sitting second to the left of M and not sit in the end of the row.

Two people are sitting between J and K, who is not sitting at any end. One person is sitting between K and L. Three people are sitting between L and N.

Q is sitting immediate right of P. Q and M is not facing south. 

Final arrangement

There are two person sitting in between P and M.

M sits third from one of the ends of the row. J is sitting second to the left of M and not sit in the end of the row.

Two people are sitting between J and K, who is not sitting at any end. One person is sitting between K and L. Three people are sitting between L and N.

Q is sitting immediate right of P. Q and M is not facing south. 

Final arrangement

Q is sitting immediate left of N and K and P are facing in same direction is true.

M sits third from one of the ends of the row. J is sitting second to the left of M and not sit in the end of the row.

Two people are sitting between J and K, who is not sitting at any end. One person is sitting between K and L. Three people are sitting between L and N.

Q is sitting immediate right of P. Q and M is not facing south.

Final arrangement

K is sitting fourth to the left of P.

The least possible Venn diagram for the given statements is as follows -

Conclusions:

I. Some programmers are cashiers. → False (As there is no direct relation given between Programmer and Cashier. So we cannot define the relation between these two elements.)

II. Some programmers are not cashiers. → False (As there is no direct relation given between Programmer and Cashier. So we cannot define the relation between these two elements.)

Hence, the correct answer is Neither I nor II follows.

Important Points

• Conditions of Either-or case:
  • The elements should be the same in both statements.
  • Individually both conclusions should be false.
  • One conclusion should be positive and one conclusion should be negative (Complementary pair).
• The two complementary pairs are:

1. All + Some not
2. No + Some

Confusion Points

• Some + Some not is not a complementary pair.
• It is possible that both 'some and some not' follow at the same time such as in the case of 'Only a few'.

The least possible diagram for the given statement is as follows,

Conclusions:

I. All Air are liquid is a possibility →True (As some part of the air is already liquid so in case of possibility all air being liquid is a possibility. Hence, it follows)

II. Some solid are not vapour → False (As there is no direct or negative relation between air and liquid, it is possible that some solid are vapour. So, some solid are not vapour is false. Hence, it does not follows)

Thus, only conclusion I follows

The least possible Venn diagram is:

Conclusions:

I. Some Locks being Small is a possibility → True (The possibility is true, as no direct relationship between the two is given).

II. All Keys are Locks → False (Only a few Keys are Locks is given which means Some Keys are Locks and Some Keys are not Locks, so All Keys cannot be locks, this is definitely false conclusion).

III. All Small being Big is a possibility → True (Only a few Big are Small is given, which means Some Big are Small and Some Big are not Small, also from this we know that Some Small are Big but we don't know about the remaining portion of Small whether it is Big or not, so the possibility is true).

Hence, Both Conclusion I and III follows.

The least possible Venn diagram:

Conclusions:

I. Some Clouds are Small → True (Some Clouds are Big and All Big are Small, so the part of Clouds which is Big is also Small).

II. Some Tiny can be Clouds → True (The possibility is true, as no direct relationship between the two is given).

III. All Small being Tiny is a possibility → False (The possibility is False, as Some Small are not Tiny is already given, so All Small will never be Tiny).

Hence, Both Conclusion I and II follows.

Boxes – 7; Q, R, S, T, U, V and W;

Number of chocolates –; 38, 49, 60, 67, 76, 83 and 92;  

1. Three boxes are placed between Q and the box which has a perfect square number of chocolates.

2. Q is placed immediately above R.

3. T has twice the number of chocolates with R.

From this we get the possible arrangement as follows. Hence, we can say that T has 76 chocolates in both the cases.

4. Five boxes are placed between R and S.

From this we can say that case 1 is eliminated, as we cannot place S.

5. The number of boxes placed above W is the same as the number of boxes placed below V.

6. The difference between the number of chocolates between R and S is twice the difference between the number of chocolates between S and U.

From this we can say that as R has 38 chocolates and S has 60 chocolates, hence, we can say that U has 49 chocolates. W and V are placed third from the ends, in any order. T is placed in the middle of the stack.

S - U = 60 - 49 = 11

S - R =  60 - 38 = 22

From this we get the arrangement as follows.

7. W is placed immediately above the box which has the highest number of chocolates but has more chocolates than T.

From this we get the final arrangement as follows.

Hence, the number of chocolates with V and W is 67 and 83, respectively.