Use these clues to guess the mystery number.
It is an odd number.
It is greater than 142.
It is less than 156.
Rounded to the nearest ten, the rounded value is less than the mystery number.
Rounded to the nearest hundred, the rounded value is greater than the mystery number.
Enter one number that could be the mystery number
Stacey Warren - Expert brainly.com
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Sorry Ive never solved a problem like this.. Maybe these people can help- @freckles @Nnesha @IrishBoy123 @welshfella @whpalmer4
well the mystery number assuming its an integer must be 143, 145, 147, 149 , 151, 153 or
now you need to check out the rounding
Hint 143 is rounded to nearest 10 is 140
(I'm not saying it is 143 but its a possibiilty)
151 and 153 rounded to the nearest 10 is 150 which is also less that these numbers.
- now you need to check the last condition - the number rounded to the nearest 100.
Odd numbers meeting the range criteria will be \[143,145,147,149,151,153,155\]
For the mystery number rounded to the nearest \(10\) to be less than the mystery number, that means the units digit must be less than \(5\), or we would round it up:
\[0\rightarrow0\]\[1\rightarrow 0\]\[2\rightarrow 0\]\[3\rightarrow 0\]\[4\rightarrow 0\]\[5\rightarrow 1\]\[6\rightarrow 1\]\[7\rightarrow 1\]\[8\rightarrow 1\]\[9\rightarrow 1\]
That means our mystery number must end in an odd digit which rounds to \(0\), which leaves only \(1\) and \(3\) as possible last digits.
For the mystery number rounded to the nearest \(100\) to be greater than the mystery number, it should be clear upon a bit of thinking that the 10s digit must be one from the table which rounds up rather than down. Combine that with your options for the final digit and you should have your two possible answers.
That was a bit unclear; I apologize. \(0\) in the right hand side of the table means "round down" and \(1\) means "round up".