Answer :
The answer is 49 - it's between four and 5 tens (40 and 50) and has nine ones
If I am greater than 4 tens and less than 5 tens and I have 9 ones; The number I am is; 49.
According to the question;
- I am greater than 4 tens
- In essence, x > 4 × 10
x > 40
- I am less than 5 tens
- In essence, x < 5×10
x > 50.
The inequality which satisfies what number I am is;
40 < x < 50
Additionally, the question iterates that I have 9 ones.
Therefore, since the only number between 40 and 50 with 9 ones is 49;
I am 49.
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