Question Details

Study the following details carefully and answer the questions that follow:

Seven individuals, S, T, U, V, W, X, and Y, are sitting in a single linear row facing the north direction. Each of them uses a different laptop brand among HP, MSI, Dell, Apple, Lenovo, Asus, and Acer, though not necessarily in the same order.

S sits at the extreme left end of the row and uses an HP laptop. X is seated second from the right end of the row. Y sits to the immediate right of the individual who uses an Asus laptop, while the person using Acer sits at the extreme right end. There are two people sitting between U and the person who uses an Asus laptop. U is positioned somewhere to the left of V. The individual who uses a Dell laptop sits to the immediate left of V. T sits adjacent to the person using the Dell laptop. W sits adjacent to V. The person using an MSI laptop sits three places to the left of the Lenovo user.

Who among the following uses an Apple laptop?

Options

A

T

B

W

C

X

D

V

E

U

Show Answer

Correct Answer :

Option D

V

Solution :

The correct answer is V (Option V).

Let's deduce the seating arrangement of the seven individuals (S, T, U, V, W, X, Y) from left (position 1) to right (position 7), all facing North, along with their respective laptop brands.

Step 1: Place fixed position clues.

1. S sits at the extreme left end (Position 1) and uses an HP laptop.
Position 1: S (HP)

2. X is seated second from the right end of the row (Position 6).
Position 6: X

3. The person using an Acer laptop sits at the extreme right end (Position 7).
Position 7: (Acer)

Currently, the positions (1 to 7 from Left to Right) look like:

1: S (HP)
2: _
3: _
4: _
5: _
6: X
7: _ (Acer)

Step 2: Determine positions for Acer, Asus, and Y.

Clue: "Y sits to the immediate right of the individual who uses an Asus laptop, while the person using Acer sits at the extreme right end."

Since Position 7 is Acer, Y can be at Position 7 (making Position 6, X, use Asus), OR Y can be at another position.

Let's test if Y is at Position 7:

If Y is at Position 7 (Acer), then Position 6 (X) uses Asus.
Clue: "There are two people sitting between U and the person who uses an Asus laptop."
If Asus is at Position 6, then U must be at Position 3 (since 6 - 3 = 3, leaving 2 people between 3 and 6, i.e., positions 4 and 5).

Let's check the remaining clues under this setup:

Clue: "The individual who uses a Dell laptop sits to the immediate left of V."
Clue: "W sits adjacent to V."
Clue: "T sits adjacent to the person using the Dell laptop."
Clue: "U is positioned somewhere to the left of V."

Let's check the positions available for individuals: 2, 4, 5.
Since U is at 3, V must be to the right of U (i.e. Position 4 or 5).
- If V is at Position 5, Dell is at Position 4 (immediate left of V).
- W sits adjacent to V, so W can be at Position 4 (Dell) or Position 6 (X - but X is already X, not W). Wait, W must be at Position 4! But Dell is at 4, so W uses Dell.
- T sits adjacent to the person using Dell (Position 4), so T could be at Position 3 or 5. Position 3 is U, so T must be at Position 2 or 5.
Let's check positions of individuals: 1: S, 2: T, 3: U, 4: W, 5: V, 6: X, 7: Y.
Let's verify all person placements:
1: S (HP)
2: T
3: U
4: W (Dell)
5: V
6: X (Asus)
7: Y (Acer)

Step 3: Determine laptop brands.

Clue: "The person using an MSI laptop sits three places to the left of the Lenovo user."
Three places to the left means: (Position of Lenovo) - (Position of MSI) = 3.
Let's look at available positions for laptops (Positions 2, 3, 5 are remaining for MSI, Lenovo, Apple):
- If MSI is at Position 2 (T), then Lenovo is at Position 2 + 3 = 5 (V).
- Then the remaining position, Position 3 (U), gets the remaining laptop brand: Apple? Wait, let's re-verify: who gets Apple?
Wait, if Position 3 (U) has Apple, then Position 5 (V) has Lenovo.
Wait! Let's check who gets Apple if MSI is at Position 3 (U): 3 + 3 = 6 (X is Asus, so no).
If MSI is at Position 2 (T), Lenovo is at Position 5 (V).
Remaining laptop brand for U (Position 3) = Apple.
Wait, let's re-check if Lenovo could be at 5 or if V uses Apple!

Let's re-verify the MSI and Lenovo condition carefully:
"The person using an MSI laptop sits three places to the left of the Lenovo user."
This means: MSI _ _ Lenovo (i.e., gap of 2 people between MSI and Lenovo).
If MSI is at Position 2, Lenovo is at Position 5.
If MSI is at Position 3, Lenovo is at Position 6 (already Asus, invalid!).
So MSI MUST be at Position 2, and Lenovo MUST be at Position 5... wait! Is Dell at 4?
Let's check: Dell is at Position 4 (W). MSI is at Position 2 (T). Lenovo is at Position 5 (V).
Then Position 3 (U) has Apple!
Wait, why does the given answer say V uses Apple?

Let's re-evaluate if Y is NOT at Position 7!
What if Y is at Position 5?
Then Asus is at Position 4.
If Asus is at 4, two people between U and Asus means U must be at 1 (S is at 1, invalid) or U is at 7 (but U is to the left of V, so invalid).

What if Y is at Position 4?
Then Asus is at Position 3.
Two people between U and Asus: U could be at Position 6 (X is at 6, invalid).

So Y MUST be at Position 7 (Acer), and Asus is at Position 6 (X).

Now let's re-check the positions of Dell, V, W, T:
Clue: "The individual who uses a Dell laptop sits to the immediate left of V."
Clue: "W sits adjacent to V."
Clue: "T sits adjacent to the person using the Dell laptop."

Case A: V is at Position 4.
Dell is at Position 3 (U).
W sits adjacent to V -> W is at Position 5 (since 3 is U).
T sits adjacent to Dell (Position 3) -> T is at Position 2 (since 4 is V).
Now individuals are: 1: S, 2: T, 3: U, 4: V, 5: W, 6: X, 7: Y.
Let's check laptop brands for Case A:
1: HP (S)
3: Dell (U)
6: Asus (X)
7: Acer (Y)
Remaining positions for laptops: 2 (T), 4 (V), 5 (W).
Clue: "The person using an MSI laptop sits three places to the left of the Lenovo user."
Position of MSI + 3 = Position of Lenovo.
If MSI is at Position 2 (T), Lenovo is at Position 5 (W).
Then the remaining position, Position 4 (V), MUST have the Apple laptop!

Let's double check Case A:
1. S (HP) - Extreme left end.
2. T (MSI)
3. U (Dell)
4. V (Apple)
5. W (Lenovo)
6. X (Asus) - Second from right end.
7. Y (Acer) - Extreme right end, immediate right of Asus (X).

Let's verify all conditions for Case A:
- S sits at extreme left end and uses HP? Yes (Position 1).
- X is seated second from right end? Yes (Position 6).
- Y sits to immediate right of individual using Asus? Yes (Y is at 7, X at 6 uses Asus).
- Acer at extreme right end? Yes (Y at 7 uses Acer).
- Two people between U (Position 3) and Asus user (Position 6)? Yes (Positions 4 and 5 are between them).
- U (Position 3) is to the left of V (Position 4)? Yes.
- Dell user (Position 3) sits to the immediate left of V (Position 4)? Yes.
- T (Position 2) sits adjacent to Dell user (Position 3)? Yes.
- W (Position 5) sits adjacent to V (Position 4)? Yes.
- MSI user (Position 2, T) sits three places to the left of Lenovo user (Position 5, W)? Yes (5 - 2 = 3).
- Remaining laptop for V (Position 4) is Apple? Yes!

Therefore, V uses an Apple laptop.

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