Question

in a certain code,p+qmeans p is the father of q;p-q means p is the sister of q and p÷q menas p is the brother of q.

which of the following equations show that a is uncle of d
1.a-b+c÷d
1.a÷b+c-d
3.a+b÷c-d
4.a-d+c÷b​

Answer 1

Given :- in a certain code :-

• p + q means p is the father of q.
• p - q means p is the sister of q.
• p ÷ q means p is the brother of q.

To Find :- which of the following equations show that a is uncle of d ?

1.) a- b + c ÷ d

2) a ÷ b + c - d

3) a + b ÷ c - d

4) a - d + c ÷ b

Solution :-

checking options one by one we get,

1) a - b + c ÷ d

• a - b → a is sister of b .

since a is female here . Therefore, a cant be uncle of d.

2) a ÷ b + c - d

• a ÷ b → a is brother of b.
• b + c → b is father of c .
• So, a is uncle of c .
• c - d → c is sister of d .

since a is uncle of c and , c is sister of d . Therefore, we can conclude that a is also uncle of d .

Hence, Option (B) is correct answer.

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