Answer:
The interval is x [7.415,7.419].
Step-by-step explanation:
Given : A number x rounded to 2 decimal places is 7.42.
To find : Write down the error interval for x ?
Solution :
Number round to 2 decimal place is lie in the interval of 3 numbers.
The number is 7.42 so the thousandth place is from 5 to 9 and hundredth place is 1.
i.e. 7.415,7.416,7.417,7.418,7.419.
As 7.415 round to 2 decimal place is 7.42.
The interval is x [7.415,7.419].
