Question 44
MediumOriginal questionIn a code, X + Y means X is the mother of Y; X − Y means X is the brother of Y; X × Y means X is the husband of Y; and X ÷ Y means X is the daughter of Y.
Which expression means that M is the grandmother of Q?
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
M + N + Q: M is the mother of N, and N is the mother of Q, so M is Q's grandmother.
M + N − Q makes N Q's brother, so M is Q's mother; M + N × Q makes N Q's husband, so M is Q's mother-in-law.
M ÷ N + Q makes M and Q both children of N, so M is Q's sister.
Worth noting
Test every expression by writing its links out in words. Only one gives two parent steps in a row.
- Concept
- Choosing the expression that encodes a given relation
- Typical timeTypical
- 70 s
- Your timeYours
- —
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