i) V cannot be subtracted from any number in Roman Numerals: In Roman numerals, V represents the value 5. According to the rules of Roman numerals, smaller numerals can only be subtracted from larger ones to form certain numbers. However, V is already one of the smaller numerals, and subtracting a smaller numeral from it would violate the rules. For example, IV represents the value 4 (1 subtracted from 5), and IX represents the value 9 (1 subtracted from 10). Therefore, V cannot be subtracted from any number in Roman numerals.
ii) Closest Estimation is nearest to the actual value as it is estimated to the nearest place value: When we estimate a number to the nearest place value, we round the number to the closest value based on the specific place value we are considering. This method of estimation helps us get an approximate value that is close to the actual value, without being exact.
For example, if we estimate a number to the nearest whole number, we round it to the nearest integer. If the number is 4.6, the closest whole number estimation would be 5. This estimation is close to the actual value but may not be exactly equal to it.
Similarly, if we estimate a number to the nearest tenth, we round it to the nearest tenth place value. For example, if the number is 4.68, the closest tenth estimation would be 4.7. Again, this estimation is close to the actual value but not precisely the same.
In this way, estimating to the nearest place value allows us to have a value that is close to the actual value while taking into account the specific level of precision or granularity required.
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