If A × B means that A is the brother of B, A – B means that A is the sister of B, A + B means that A is the father of B then which of the following expression shows that P is the father of R?

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SSC CGL 2022 Tier-I Official Paper (Held On : 13 Dec 2022 Shift 1)
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  1. P + Q × R
  2. P × Q + R
  3. P + Q + R
  4. P - Q × R

Answer (Detailed Solution Below)

Option 1 : P + Q × R
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Detailed Solution

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Common Diagram 28.01.2020 D3

Given :

A is

Symbol

×

-

+

Meaning

Brother

Sister

Father

to B

So,

  • Option - (1) : P + Q × R → P is the father of Q who is the brother of R.

F1 Savita SSC 21-3-23 D40

Here, P is the father of R.

  • Option - (2) : P × Q + R → P is the brother of Q who is the father of R.

F1 Savita SSC 21-3-23 D41

Here, P is the paternal uncle of R.

  • Option - (3) : P + Q + R → P is the brother of Q who is the brother of R.

F1 Savita SSC 21-3-23 D42

Here, P is the brother of R.

  • Option - (4) : P - Q × R → P is the sister of Q who is the brother of R.

​​F1 Savita SSC 21-3-23 D43

Here, P is the brother of R.

Thus, out of all the options only option - (1) shows that P is the father of R.

Hence, "Option - (1)" is the correct answer.

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