CA Foundation · Quantitative Aptitude · Blood Relations
In a certain code, 'A $ B' means 'A is the father of B', 'A % B' means 'A is the sister of B', 'A & B' means 'A is the wife of B', and 'A @ B' means 'A is the son of B'. Which expression shows that M is the paternal grandmother of K?
The expression M & N $ L $ K is correct. M is the wife of N, N is the father of L, and L is the father of K. So M is the wife of K's father's father, which is the paternal grandmother.
- AM & N $ L $ KCorrect
- BM & N $ L % K
- CM % N $ L $ K
- DM & N @ L $ K
Explanation
Paternal grandmother is the wife of the father's father. M & N: M is the wife of N. N $ L: N is the father of L. L $ K: L is the father of K. So M is the wife of K's paternal grandfather, hence K's paternal grandmother. Option 2 makes L a sibling of K, so M would be a mother. Option 3 makes M the sister of N, a great-aunt. Option 4 makes N the son of L, which reverses the generations.
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