The logic followed here is:​

So, '274' will replace the question mark in the given series.

Hence, the correct answer is "Option 3".

Let's check each option,

1) ÷ × + -

→ 5 ÷ 25 × 5 + 11 - 9 = 23

→ 1/5 × 5 + 11 - 9 = 23

→ 1 + 11 - 9 = 23

→ 12 - 9 = 23

→ 3 ≠ 23

→ LHS ≠ RHS

2) × ÷ - +

→ 5 × 25 ÷ 5 - 11 + 9 = 23

→ 5 × 5 - 11 + 9 = 23

→ 25 - 11 + 9 = 23

→ 34 - 11 = 23

→ 23 = 23

→ LHS = RHS → Satisfies the equation.

3) × ÷ + -

→ 5 × 25 ÷ 5 + 11 - 9 = 23

→ 5 × 5 + 11 - 9 = 23

→ 25 + 11 - 9 = 23

→ 36 - 9 = 23

→ 27 ≠ 23

→ LHS ≠ RHS.

4) + - × ÷

→ 5 + 25 - 5 × 11 ÷ 9 = 23

→ 5 + 25 - 5 × 11/9 = 23

→ 5 + 25 - 55/9 = 23

→ 30 - 55/9 = 23

→ 215/9 ≠ 23

→ LHS ≠ RHS

Here, we can see that only Option 2 satisfies the equation.

Hence, the correct answer is "× ÷ - +".

According to the given information,

1) Only 1 person sits to the left of D.

5) Only 3 people sit between C and G.

6) B is not an immediate neighbour of G.

Hence, the correct answer is "B".

The least possible Venn diagram is:

Conclusions:

I. Some white are trucks. → Not follow (As, there is no definite relation between white and trucks. Hence, false)

II. Some horses being truck is a possibility. → Follows (As, some horses are trucks is not definite, but it can be possible)

Hence, the correct answer is "Only conclusion II follows".

The positions of the letters according to the English alphabet series:

LOGIC: Sum of Positional Values of Reverse Positional Letters = Code.

The pattern for this is as follows;

In PETS →

Reverse Positional Letters and positional Values are:

P ⇔ K = 11

E ⇔ V = 22

T ⇔ G = 7

S ⇔ H = 8

PETS = (11 + 22 + 7 + 8) = 48

And;

In FARM →

Reverse Positional Letters and positional Values are:

F ⇔ U = 21

A ⇔ Z = 26

R ⇔ I = 9

M ⇔ N = 14

FARM = (21 + 26 + 9 + 14) = 70

Similarly;

In DAIRY →

Reverse Positional Letters and positional Values are:

D ⇔ W = 23

A ⇔ Z = 26

I ⇔ R = 18

R ⇔ I = 9

Y ⇔ B = 2

DAIRY = (23 + 26 + 18 + 9 + 2) = 78

Hence, the correct answer is "78".

Shortcut Trick

Shortcut to remember the reverse positional letters.

Given Equation: 63 × 24 + 8 ÷ 4 + 2 - 3 = ?

BODMAS Rule:

Decoding the Given Information:

Now replacing the sign from left to right using BODMAS Rule, we get:

New Equation: 63 - 24 ÷ 8 × 4 ÷ 2 + 3 = ?

Calculation:

⇒ 63 - 24 ÷ 8 × 4 ÷ 2 + 3 = ?

⇒ 63 - 3 × 2 + 3 = ?

⇒ 63 - 6 + 3 = ?

⇒ 66 - 6 = 60.

Hence, the correct answer is "Option 4".

The least possible Venn diagram for the given statement is:

Conclusions:

I. Some books are yellow → Does not follow (As, there is no definite relation given between Books and Yellow, so it can be possible only).

II. Some purses are papers → Follows (The part of paper which also yellow is purse as it is given in statement that some paper are yellow).

Thus, only conclusion II follows.

Hence, the correct answer is 'Option 2'.

Given:

Football fans, Cricket fans, Doctors

The Venn diagram for the given classes is:

A football fan can be a doctor and a cricket fan too.

Hence, the correct answer is "Option (1)".

The logic followed here is:

Logic: One horizontal 'S' is getting changed it's shape in vertical form to the each next image.

So, option 4 will complete the series.

Hence, the correct answer is "Option 4".

Given Statements:

Some facebook are WhatsApp.

All messenger are WhatsApp.

The least possible Venn diagram for the given statement is:

Conclusions:

I. All WhatsApp are messenger - False (Because, All messenger are WhatsApp implies that some WhatsApp are messenger, but All WhatsApp are messenger can be possible only).

II. Some facebook are messenger - False (Because, No definite relation given between facebook and messenger, so it can be possible only).

So, Neither conclusion I nor II follow.

Hence, the correct answer is "Option 3".