Verbal Reasoning - Blood Relation Test - Discussion

The text may look as lengthy but it will be very helpful to solve the relation related questions and save your time also.

The trick to solve the question is as follows:
Step 1: make out the conditions from the question, for example in this question it says ''c is the son of M''. here we can configure the conditions as follows-
Condition 1- c must be a male in the equation.
COndition 2- M should be father or mother in the equation.

Based on these conditions we can filter the options and the remaining conditions can be checked finaaly to confirm the answer. for example in this question :

1st option: c+f means c is brother of F. it confirms that c is a male. and M-N means M is sister of N, here M is neither a father nor mother, so this condition we can take it as a wrong and can avoid it.

2nd Option: C+N means C is brother of N, it confirms that C is a Male. N*M, here M has came in last, so we can not determine the sex of M. So this Option also we can filter out.

3rd Option: F*C means C came in last of the equation and we can not determine the sex of the C. this also we can filter it out.

the remaining option is four. so we can check the fourth option to check it is correct.

Basically on the basis of the question we have to make the conditions and on the basis of these condition we have to filter out the options.

Do practice of it, and you will find very easy to solve these types of questions.

The correct one is M x N - C + F.

Read it from left to right.

M x N → M is the father of N
(M is the dad of N)

N - C → N is the sister of C (N is sis of C, so C must be a boy)

C + F → C is the brother of F(confirms again, C is a boy)

Let’s pull it all together;
M x N → M is dad of N.

N - C → N is the sister of C → So C is also a child of M, since N and C are siblings, and M is the dad.

C + F → C is the brother of F → confirms C is male.

So C is the son of M.

Final Breakdown:
Person -- Relation
M -- Father
N -- Daughter
C -- Son (our target 🎯)
F -- C's sibling (no gender needed)

So, the Final answer:
M x N - C + F.
C is the son of M!

@Sanjay Bisht.

As the A B are actually in order
So I think the letters whch are given in options also should be taken in order. Which means F*c is given whch is wrong in alphabitical order. and same for N*M also
if it was like (C*F)as(A*B)then c would have also considered as father of F....but it is given as F*C which is wrong in alphabetical order. So it ruled out.

If A + B means A is the father of B; A - B means A is the brother B; A % B means A is the wife of B and A x B means A is the mother of B, which of the following shows that M is the maternal grandmother of T?

A. M x N % S + T B. M x N - S % T.

C. M x S - N % T D. M x N x S % T.

How we will solve this?

A is bro of B (if +),
A is sis of B ( if -) ,
A is the father of B (if x).

The question says what equation says the C is the son of M.

By Cross-checking, we got a hint. (A × B - a is the father of B)

Our question is to check whether C is the son of M.
Or (M is the father of C)

So, Option D is correct.

@ Vikas Saini.

That's the correct way to solve these sorts of problem! I always go in this way. I would also like to suggest if you don't mind.

Try to make a rough diagram in these sorts of sum it easiens the question and allows you to answer in better way. Hope it helps you.

@ Vikas Saini.

But how to solve this problem if there r no options.. plz mention the detailed procedure as i am preparing for descriptive exam..hav to mention the steps also...

Even if the C is the daughter of M, then answer can't be B. Draw the family tree diagram for it.

Answer is D @Vikas.

Thanks for explaining this method.

M has one daughter (N) and one son is (C) and C is the brother of F (gender not clear).
As M has three child,
In this condition 4 option is correct.

Hello Vikas i din't get that line "F*C means C came in last of the equation and we can not determine the sex of the C" Plz.. Explain It