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Q: The sum of two digits having their last non-zero digit in the hundredth place also has it last nonzero digit in the hundredth place?

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In the number 123.456, the digit 5 is in the hundredth place. The hundredth place is two digits to the right of a decimal point.

It is the leading digit.

The first digit can be 0 through 9, ten possibilities. Having selected the first digit, you have 9 digits to pick from the second digit. Having selected the second digit, you have 8 digits to pick from the third digit. Hence total possibilities = 10 x 9 x 8 = 720

10000023

102,345

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In this case, there are 4 significant digits. All nonzero digits are significant as well as the zero between the nonzero digits and the zero to the right of the last nonzero digit since it is after the decimal.

A counter example is a disproving of an answer. The counterexample to this is basically your saying if you have two nonzero digits in the tenths place and subtract it, you'll always get a nonzero digit in the answer. but if you have 560.4 - 430.4, then you'll get 130.0. there is a zero in the tenths place. I just disproved that you will always get a nonzero digit in the tenths place. 4 - 4 = 0. the 4s represent the tenths place in each of the 4s in the problem. walah. :P

The answer is -5300.

In the number 123.456, the digit 5 is in the hundredth place. The hundredth place is two digits to the right of a decimal point.

It could be 4.12111... (repeating).

It is 0.88887

.77775

There are 126 different 5 digit combinations. Note that the combination 12345 is the same as the combination 45312.

It is the leading digit.

All digits between the first non-zero digit and the last non-zero digits are significant. Some would argue that trailing 0s are significant since they are an indication of the precision of the number.

All digits between the first non-zero digit and the last non-zero digits are significant. Some would argue that trailing 0s are significant since they are an indication of the precision of the number.

All digits between the first non-zero digit and the last non-zero digits are significant. Some would argue that trailing 0s are significant since they are an indication of the precision of the number.

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