The correct answer is Option 4 i.e. Either conclusion I or II follows.

The correct answer is Option 2 i.e. Only II follows

The least possible diagram for the given statements is drawn below:

Let us see the conclusions:

I. All mammals being evil is a possibility: False (It is given that some mammals are lions and no lion is evil so, some mammals which are part of the lion cannot be evil)

II. No evil is lion: True (No lion is evil)

Hence, Only II follows is the correct answer.

The correct answer is Option 3 i.e. NGN

Logic: H + 2 = J, P - 3 = M, B + 4 = F,

Similarly, J + 2 = L, M- 3 = J, F + 4 = J,

So, L + 2 = N, J - 3 = G, J + 4 = N

Hence, the correct answer is NGN.

The correct answer is Option 4 i.e. 0.09216

The pattern followed here is,

Given series: 128, 25.6, 7.68, 1.536, 0.4608, ?

128 × 0.2 = 25.6

25.6 × 0.3 = 7.68

7.68 × 0.2 = 1.536

1.536 × 0.3 = 0.4608

0.4608 × 0.2 = 0.09216

So, the next term is 0.09216.

Hence, the correct answer is 0.09216.

The correct answer is Option 1 i.e. A.

Understanding

There are 4 elements in every figure out of which 3 are the random alphabets and one is a unique element. 

On observation it is found that the upper two elements exchange their position with each other and the lower elements also exchange their position with each other.

The symbol at the top gets changed with the new one at the alternate step. 

The new letter appears at the bottom at the alternate step.

Hence, A is the correct answer.

The correct answer is Option 3 i.e. Diener

A gardener is a person, who works in Nursery.

Diener is the person, who works in Morgue.

Hence, the correct answer is Diener.

The correct answer is option 1 i.e. 4.

Logic: Number = Subtract the positional value of the given letters and then write the square root of the number.

ZA : 5 :: YI : ?

ZA : 5

Z = 26

A = 1

26 - 1 = 25, 

The square root of 25 = 5

Similarly, 

YI : ? 

Y = 25 

I = 9

25 - 9 = 16,

The square root of 16 = 4

Hence, the correct answer is 4.

The correct answer is Option 4 i.e. (58, 18, 13)

Logic: The following logic is used

(59, 20, 13)

= [(5 + 9) - (1 + 3)] × 2

= (14 - 4) × 2

= 20

Similarly,

(49, 14, 15)

= [(4 + 9) - (1 + 5)] × 2

= (13 - 6) × 2

= 7 × 2

= 14

1. (68, 13, 12)

= [(6 + 8) - (1 + 2)] × 2

= (14 - 3) × 2

= 22 (not equal to 13)

2) (81, 87, 11)

= [(8 + 1) - (1 + 1)] × 2

= (9 - 2) × 2

= 14 (not equal to 87)

3) (38, 8, 44) 

= [(3 + 8) - (4 + 4)] × 2

= (11 - 8) × 2

= 6 (not equal to 8)

4) (58, 18, 13)  

= [(5 + 8) - (1 + 3)] × 2

= (13 - 4) × 2

= 18 equal to 18

Hence, the correct answer is (58, 18, 13).

The correct answer is option 3 i.e. 6.

The relation between the numbers is given below:

25 : 10

2 × 5 = 10

Similarly,

23 : ?

2 × 3 = 6

Hence, the correct answer is 6.

The correct answer is option 3 i.e. ÷ × + =.

Given Equation: 400 * 2 * 1 * 5 * 205

Check all the options:

Option 1: ÷ + - =

After replacement, the equation becomes;

400 ÷ 2 + 1 - 5 = 205

= 196 is not equal to 205.

Hence, option 1 is not the correct answer.

Option 2: ÷ - - =

After replacement, the equation becomes;

=  400 ÷ 2 - 1 - 5 = 205

= 194 is not equal to 205.

Hence, option 2 is not the correct answer.

Option 3: ÷ × + =

After replacement, the equation becomes;

=  400 ÷ 2 × 1 + 5 = 205

= 205 is equal to 205.

Hence, option 3 is the correct answer.

Option 4: + + × =

After replacement, the equation becomes;

= 400 + 2 + 1 × 5 = 205

= 407 is not equal to 800.

Hence, option 4 is not the correct answer.

Hence, the correct answer is ÷ × + =.