# Blood Relations Quiz Set 017

### Question 1

If 'A \$ B' means that A is the father of B, 'A * B' means that A is the mother of B, 'A @ B' means that A is the wife of B, then which of the following means that M is the grand-mother of N?

A

M * R \$ T @ N.

B

M * R @ T @ N.

C

M * T \$ N @ R.

D

None of these.

Soln.
Ans: c

'M is the grandfather of N' would be represented as M* T \$ N @ R.

### Question 2

'P ∆ Q' means that P is the mother of Q, 'P [] Q' means that P is the father of Q, 'P # Q' means that P is the sister of Q. Which of the following represents 'M is the daughter of R' ?

A

R [] M ∆ N.

B

R ∆ N [] M.

C

R # M [] N.

D

Soln.
Ans: a

R [] M means R is the father of M, but M could be male or female. Next R∆N means R is mother. Hence M is female, and therefore, daughter of R.

### Question 3

Read the following information carefully and then answer the questions given below it:

1. 'P @ Q' means 'P is the mother of Q'.
2. 'P \$ Q' means 'P is the husband of Q'.
3. 'P # Q' means 'P is the sister of Q'.
4. 'P * Q' means 'P is the son of Q'.

If F#J*T\$R@L, then which of the following is definitely true ?

A

L is the brother of F.

B

F is the sister of L.

C

F is the brother of J.

D

L is the brother of J.

Soln.
Ans: b
1. F#J means F is the sister of J. So the option "F is the brother of J" is not possible.
2. J*T means J is the son of T. So J and F are the son and daughter of T.
3. T\$R means T is the husband of R. So J and F are the son and daughter of R also.
4. R@L means R is the mother of L. So J, L and F are children of R and T, but we cannot say whether L is male or female. So "L is brother of F" and "L is brother of J" are not possible as answer. We are left with "F is sister of L", which is true because F is female.

In nutshell: since, sex of L is not known hence we cannot say whether L is brother of F or F is sister of L. These two options can be ruled out. However, it is clear that F is the sister of L.

### Question 4

'A + B' means that A is the father of B, 'A − B' means that A is the wife of B 'A × B' means that A is the brother of B, and 'A ÷ B' means that A is the daughter of B. If S ÷ T × U + Z, which of the following is true ?

A

S is the daughter of Z.

B

Z is the aunt of S.

C

S is the aunt of Z.

D

Cousins.

Soln.
Ans: d

S is the daughter of T, who is the brother of U, and U is the father of Z. So S and Z are cousins.

### Question 5

If B says that his mother is the only daughter of A's mother, how is A related to B?

A

Son.

B

Father.

C

Brother.

D

Uncle.

Soln.
Ans: d

As the given information in the question, B's mother is the only daughter of A's mother. Hence, A is the uncle of B.