If “he loves coffee“ is coded as 123; “coffee has caffeine” is coded as 245; “he coffee caffeine” is coded as 125 and “ caffeine is bad” is coded as 567 then “he” is represented by:

Write the four statements with their numerical codes:

1. “he loves coffee”  →  $$1\;2\;3$$
2. “coffee has caffeine”  →  $$2\;4\;5$$
3. “he coffee caffeine”  →  $$1\;2\;5$$
4. “caffeine is bad”  →  $$5\;6\;7$$

Step 1: Identify the common word between statements 1 and 3.
• Common words: “he”, “coffee”.
• Common codes (intersection of $$1\;2\;3$$ and $$1\;2\;5$$): $$1,2$$.
Thus “he” and “coffee” are represented by $$1$$ or $$2$$.

Step 2: Use a third statement containing “coffee” but not “he” to distinguish between them.
Statement 2 has “coffee” but not “he” and is coded $$2\;4\;5$$.
The only code common to statements 1, 2, 3 is $$2$$, so $$2$$ must be “coffee”.

Step 3: From Step 1, the remaining code $$1$$ now corresponds to “he”.

Therefore, “he” is represented by $$1$$.

Option D which is: 1