A # B means 'A is the brother of B'. A @ B means 'A is the son of B'. A & B means 'A is the father of B'. A % B means 'A is the mother of B'. If W # Q @ T & Y @ M % K % L, then how is K related to W?
Sister
Understanding Blood Relation Symbols
In blood relation puzzles, specific symbols are used to represent relationships. Understanding these symbols is the first step to solving the problem. Let's look at the symbols provided:
- # means 'A is the brother of B'
- @ means 'A is the son of B'
- & means 'A is the father of B'
- % means 'A is the mother of B'
Decoding the Blood Relation Expression
The given expression is W # Q @ T & Y @ M % K % L. We need to break this down segment by segment to build the family tree or understand the connections between individuals.
| Segment | Relationship | Inference (Gender/Connection) |
|---|---|---|
| W # Q | W is the brother of Q | W is male. W and Q are siblings. |
| Q @ T | Q is the son of T | Q is male. T is the parent of Q. |
| T & Y | T is the father of Y | T is male. T is the parent of Y. |
| Y @ M | Y is the son of M | Y is male. M is the parent of Y. |
| M % K | M is the mother of K | M is female. M is the parent of K. |
| K % L | K is the mother of L | K is female. K is the parent of L. |
Building the Family Connections
Now, let's combine the inferences:
- W is the brother of Q. (W is male)
- Q is the son of T. Since W is Q's brother, W is also the son of T. (W, Q are children of T. T is male)
- T is the father of Y. Since W and Q are sons of T, and T is also the father of Y, W, Q, and Y must be siblings. (W, Q, Y are children of T. T is male, W is male, Q is male)
- Y is the son of M. We already know T is the father of Y. If T is the father and M is the mother of the same person (Y), then T and M are likely spouses. (T is male, M is female. T and M are parents of Y).
- If T and M are parents of Y, and T is the father of W and Q, then M must also be the mother of W and Q (assuming T and M are a couple with these children). So, W, Q, and Y are children of both T and M. (W, Q, Y are siblings. Parents are T (male) and M (female). W, Q, Y are all male from the given expressions).
- M is the mother of K. This means K is a child of M. Since W, Q, and Y are also children of M, K is a sibling of W, Q, and Y.
- K is the mother of L. This tells us K is female.
Determining the Relationship between K and W
From the combined connections, we know:
- W is a child of M.
- K is a child of M.
- Therefore, W and K are siblings, sharing M as a parent.
- W is identified as male (W # Q implies W is a brother).
- K is identified as female (K % L implies K is a mother).
Since W and K are siblings and K is female, K is the sister of W.
Revision Table: Key Symbols and Meanings
| Symbol | Meaning | Example (A [Symbol] B) |
|---|---|---|
| # | Brother | A is the brother of B |
| @ | Son | A is the son of B |
| & | Father | A is the father of B |
| % | Mother | A is the mother of B |
Additional Information on Blood Relation Puzzles
Blood relation questions test your ability to decipher coded relationships and build a family structure. Key strategies include:
- Break down complex expressions into smaller parts.
- Identify the gender of individuals whenever possible based on the relationship symbol (e.g., brother implies male, mother implies female).
- Connect the segments to form a complete family tree or relationship chain.
- Work from both ends of the expression if helpful.
- Be careful with gender. Some relations (like sibling, child, parent) don't specify gender unless another symbol or part of the expression clarifies it.
Important Questions from Miscellaneous
A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R from the building. Taking g = 10 m/s2 and neglecting air resistance will give :
A sphere of volume V is made of a material with lower density than water. While on Earth, it floats on water with its volume f1V (f1 < 1) submerged. On the other hand, on a spaceship accelerating with acceleration a < g (g is the acceleration due to gravity on Earth) in outer space, its submerged volume in water is f2V. Then:
A railway wagon (open at the top) of mass M1 is moving with speed v1 along a straight track. As a result of rain, after some time it gets partially filled with water so that the mass of the wagon becomes M2 and speed becomes v2. Taking the rain to be falling vertically and the water stationery inside the wagon, the relation between the two speeds v1 and v2 is :
Consider the following statements:
1. Distance between the longitudes becomes zero on North Pole and South Pole.
2. Distance between the longitudes is maximum on the Equator.
3. Number of longitudes is more than number of latitudes.
Which of the statements given above is/are correct?
One block of 2⋅0 kg mass is placed on top of another block of 3⋅0 kg mass. The coefficient of static friction between the two blocks is 0⋅2. The bottom block is pulled with a horizontal force F such that both the blocks move together without slipping. Taking acceleration due to gravity as 10 m/s2, the maximum value of the frictional force is :
