Use of BODMAS rule,

By interchanging the given two signs + and -

7 ÷ 21 × 42 – 14 + 18 = 20 

After interchanging: 7 ÷ 21 × 42 + 14 - 18 = 20 

7 ÷ 21 × 42 + 14 - 18 = 20 

14 + 14 - 18 = 20 

28 - 18 = 20 

20 = 20.

Hence, the correct answer is "Option 1"

The least possible Venn diagram is as follows:

Conclusion:

I. No plate is cup. - False (As their is no direct relation between plate and cup may be it is posssible but not definite. Hence it is false)

II. No bottle is plate.- True (No plate is bottle. No bottle is plate. is True)

Only conclusion II follows

Hence, the correct answer is "Option 2"

Given Series:  N 4 6 D # $ L 2 3 % @ 3 $ & # 3 G $ H @ K # & 5 H 4 D # % 5 3 @ O % 9 V 3 @

Required Conditions :  3 are immediately followed by an alphabet

N 4 6 D # $ L 2 3 % @ 3 $ & # 3 G $ H @ K # & 5 H 4 D # % 5 3 @ O % 9 V 3 @

Hence, the correct answer is "Option 4"

the logic follows here,

Hence, the correct answer is "Option 1"

Five plays P1, P2, P3, P4 and P5 are to be staged from Monday to Friday of a week.

• On each day, only one play will be staged.
• P4 and P5 should not be the first or last to be staged.
• P5 should be staged immediately before P3.
• P2 should be staged immediately after P4.
• One play is staged between P1 and P2

The Final Arrangement is, 

Thus, P2 play is staged on Wednesday.

Hence, the correct answer is "Option 4"

Gievn :  # 2 3 $ 2 % @ $ & 3 # G 2 $ 3 H @ 3 K # & 2 5 H 4 D # 2 2 % 5 2 3 @ 2 O % 9 2 V @ 2 3 4 2 2 % 5 2 3

 2’s are there

 # 2 3 $ 2 % @ $ & 3 # G 2 $ 3 H @ 3 K # & 2 5 H 4 D # 2 2 % 5 2 3 @ 2 O % 9 2 V @ 2 3 4 2 2 % 5 2 3

 There are 13 ,2’s are in series.

Hence, the correct answer is "Option 2"

Given :  8 + 14 – 7 × 6 ÷ 3 = 8 

By interchanging the given two signs + and -

8 + 14 – 7 × 6 ÷ 3 = 8 

After interchanging the given two signs + and -

8 - 14 + 7 × 6 ÷ 3 = 8 

8 + 14 – 7 × 2 = 8 

8 + 14 – 14 = 8 

8 = 8 .

Hence, the correct answer is "Option 1"

• Tarun walks 46 km towards East.
• He turns right and walks 36 km.
• He again turns right and walks 46 km.

The Final Diagram,

Hence, the correct answer is "Option 2"

Given Series : N 4 6 D # $ L % @ $ & # G $ H N 4 D 6 D # $ L & 5 N 4 D 6 D # $ L # % 5 3 N 4 D 6 D # $ L V @ 

4 are immediately followed and preceded by an alphabet

 N 4 6 D # $ L % @ $ & # G $ H N 4 D 6 D # $ L & 5 N 4 D 6 D # $ L # % 5 3 N 4 D 6 D # $ L V @ 

Hence, the correct answer is "Option 2"

Given: A, B, C, D and E are five friends sitting in a single row facing North.

• A sitting fourth to the right of C.
• B is sitting second to the right of C.
• D sitting to the immediate left of B.

The Final Arrangement is, 

Hence, the correct answer is "Option 1"

Alphabet Table

The pattern followed here is

The logic follows here, 

Similarly,

Hence, the correct answer is "Option 4"

Alphabet Table

The pattern followed here is

Hence, the correct answer is "Option 3"

Given :  Eight friends A, B, C, D, E, F, G and H are seated in a straight line and all of them are facing north, but not necessarily in the same order.

B sits second to right of F.

F sits at one of the extreme ends of the line.

Only three people sit between B and E.

C sits third to the left of D.

Only two people sit between D and A.

G is not an immediate neighbour of E

The Final Arrangement is, 

Hence, the correct answer is "Option 2"

The logic follows here, 

Hence, the correct answer is "Option 2"

• Brother of my father
• → my uncle.
• Mother of the brother of my father
• → my grandmother (father’s mother).
• Husband of that mother
• → my grandfather.

So,

Her father = my grandfather

Hence, the correct answer is "Option 3"

The pattern followed here is:

Hence, the correct answer is "Option 2"

The least possible Venn diagram is as follows:

Conclusion:

I. All B are S. - False (Some B are S . Some S are B. Hence, it is false)

II. All A are S. - False (As their is no direct relation between A and S may be it is possible but not definite. Hence, it is false)

Neither conclusion follows.

Hence, the correct answer is "Option 3"

Given: 4 + 3 ÷ 2 × 4 – 7 = 6

By interchanging the given two signs + and –

4 - 3 ÷ 2 × 4 + 7 = 6

4 - 3 × 2 + 7 = 6

11 - 6 = 6

5 ≠ 6

Hence, the correct answer is "Option 1"

Six lectures A1, A2, A3, A4, A5 and A6 are to be organized in a span of seven days from Sunday to Saturday. Only one lecture on each day in accordance with the following:

I. There should be a gap of two days between A5 and A4.

II. A2 should be organised on Tuesday and should not be organized just before A4.

III. A1 should not be organized on Thursday.

IV. One day there will be no lecture (Friday is not that day), just before that day A4 will be organised.

V. A3 should be organised immediately after A6.

The Final Arrangement is, 

Hence, the correct answer is "Option 2"

Alphabet Table

Logic: Sum of all alphabetical value and divided by number of letters.

The pattern followed here is

• PIETY = 16 + 9 + 5 + 20 + 25 = 75/5 = 15
• ZTHOU = 26 + 20 + 8 + 15 + 21 = 90/5 = 18
• Similarly,
• NCHEE = 14 + 3 + 8 + 5 + 5 = 35/5 = 7

Hence, the correct answer is "Option 3"