So, it is clear from the above relation, that Sahil is brother in law of the man.

Hence, option B is the correct answer.

The logic is that the first number is divided by 4 and the square root of the result is the second number –

Similarly,

Hence, option D is the correct answer.

From the given options, the best representation is the figure below as some males are humans, some males are animals. All males or humans can fall under the broad category of animals.

Hence, option C is the correct answer.

Observing all the options we can clearly see option C is embedded in the question figure.

Hence, option C is the correct answer.

As,

37+7=44, 44*1.5=66

Similarly,

17+7=24, 24*1.5=36

Hence, option A is the correct answer.

The figure that will come next in the series is given below, as the arrow moves one step clockwise with itself rotating anticlockwise.

The stick moves one step anticlockwise with itself flipping directions.

One triangle moves one step clockwise with number of sides increasing by 1, i.e. square, pentagon and thus next would be a hexagon.

The other triangle moves one step clockwise and is solid and hollow alternatively.

Hence, option D is the correct answer.

After interchanging the signs and numbers, the new equation will be

= 7 + 12 ÷ 3 – 6

= 7 + 4 – 6

= 11 - 6

= 5

Hence, option B is the correct answer.

The logic here is that the words are opposites of each other.

Coward : Brave : : Traditional : Modern

Hence, option C is the correct answer.

The pattern is:

Hence, option C is the correct answer.

The logic is that the sum of first and third number, when divided by 2 and +1 added to it gives the second number –

[(46 + 82) ÷ 2] + 1 = 65

[(54 + 90) ÷ 2] + 1 = 73

[(21 + 57) ÷ 2] + 1 = 40

But,

[(39 + 75) ÷ 2] + 1 = 58 and not 48

Hence, option D is the correct answer.