Question

The following individuals are part of a family:

- a is the daughter of b.
- b is the son of c.
- c is the father of d.
If x is the son of b and has one brother, y, then:
i. a is the sister of y.
ii. b and y are brothers.
iii. c is the grandfather of y.

Choose the correct answer from the options:
a. Only i and iii
b. Only i and ii
c. Only ii and iii
d. All of the above

Answer 1

The correct answer is 'Only i and iii,' confirming that 'a' is the sister of 'y' and 'c' is the grandfather of 'y.' Statement 'ii' is false because 'b' and 'y' are not brothers; 'b' is the father of 'y.' The correct answer is a. Only i and iii.

Step-by-step explanation:

Based on the family relationships described, the correct answer to whether statements i, ii, and iii are true is option (a), 'Only i and iii.' Here is a step-by-step explanation:

• a is the daughter of b. This implies that a and x (son of b) are siblings.
• b is the son of c, making c the grandfather of b's children.
• c is the father of d (the relationship between d and other members is not relevant to the scenario).
• x has one brother, y, so y is also the son of b and sibling to a and x.

Therefore:

1. a is the sister of y. - True
2. b and y are brothers. - False, b is the father of y.
3. c is the grandfather of y. - True