I am greater than 4 tens and less than 5 tens. I have 9 ones.
What number am I?
Answer (2)
x ∈ ( 40 ; 50 ) an d x = 10 p + 9 , p ∈ I + x = 49 A n s . T h e n u mb er i s 49
The number is 49, as it is greater than 40 and less than 50, and has 9 ones added to it. Thus, the calculation is 40 + 9 = 49.
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