If A × B means that A is the father of B, A - B means that A is the mother of B, A + B means that A is the brother of B then which of the following expression shows that Q is the son of P?

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

Answer (Detailed Solution Below)

Option 1 : P × Q + R
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Detailed Solution

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Given :

A is

Symbol

×

-

+

Meaning

Father

Mother

Brother

to B

So,

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


Here, Q is the son of P.

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


Here, Q is the father of P.

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


Here, Q is the brother of P.

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

 

Here, Q is the daughter of P.

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

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