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Logical Reasoning(IBPS RRB PO)

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Directions: Study the following information to answer the given Questions:

Seven persons A, B, C, D, E, F and G lives on seven different floors of 7-storey building from bottom to top such as ground floor is numbered as 1st and top floor is numbered as 7th. Each of them has mobiles of different companies – Apple, Lenovo, Moto, Oneplus, Samsung, Vivo and Xiomi. C does not have Apple or Vivo mobile. C lives just above A’s floor and neither has Moto or Lenovo mobile. D has Oneplus mobile and lives on 2nd floor. The person at the topmost floor has Moto mobile. The person, who has Lenovo mobile, lives three floors above E’s floor. The one, who has Apple mobile, lives three floors above the one, who has Samsung mobile. The floors of F and B are adjacent to each other. E does not live on the first floor.

If F has Moto mobile the who has Lenovo mobile?

This questions was previously asked in

RRB PO Prelims (21 August 2022 Shift1)

View All RRBA Previous Year Papers

None of the above

Explanation:

Let’s break down each statement step by step:

- There are 7 people, 7 floors (1=lowest, 7=highest), 7 mobile brands.

- D has Oneplus, and lives on 2nd floor.

- The person on the 7th floor has Moto.

- F has Moto mobile. So, F lives on 7th floor.

- C lives just above A. C does NOT have Apple or Vivo, nor Moto or Lenovo (from rules).

- The Lenovo user lives *three floors above E*.

- The Apple user lives three above *Samsung user*.

- F and B's floors are adjacent.

- E not on floor 1.

Let’s place what we know:

- 2nd: D – Oneplus

- 7th: F – Moto

Find Lenovo:

- F (Moto, 7th).

- If Lenovo is on 4th, then E must be on 1st (since 4-3=1), but E can’t be on 1st. If Lenovo is on 5th, E is on 2nd, but that’s D’s floor. If Lenovo is on 6th, E on 3rd, that's possible.

Try: Lenovo - 6th, E - 3rd.

So: E - 3, D - 2, F - 7 (Moto), Lenovo - 6th.

Now, F (7), B adjacent (so 6th). So B is on 6th floor, B has Lenovo.

Answer Explanation:

- The person who has Lenovo mobile is B.

?? Correct Answer: Option 4, B

Explanation summary:

- F is Moto (F = 7th floor = Moto).

- Lenovo is 3 floors above E (so only possible in [6-3=3 or 5-3=2] but D is on 2, only [6-3=3]).

- So, Lenovo = 6th (B), E = 3rd.

- F’s adjacent is B (i.e., 6th), so B has Lenovo.

?? Option 4: B is the correct answer.