When using the "Amazing Facts of Nine" trick, what does the ...
Explanation:
The "Amazing Facts of Nine" trick is a mathematical trick that involves multiplying a number by 9 and then observing the resulting digits. This trick can be used to determine certain properties of the original number.
When using this trick, you multiply the original number by 9 and look at the resulting digits of the answer. The tens digit of the answer represents one less than the original number. Let's understand why this is the case.
Working of the Trick:
1. Take any number as the original number.
2. Multiply the original number by 9.
3. Observe the resulting digits of the answer.
Explanation of Option 'C':
According to the given options, the tens digit of the answer represents one less than the original number. Let's see an example to understand this:
Suppose we take the original number as 5.
Multiplying 5 by 9, we get:
5 x 9 = 45
In the answer, the tens digit is 4. Notice that 4 is one less than the original number 5.
Let's take another example with the original number as 8.
Multiplying 8 by 9, we get:
8 x 9 = 72
In the answer, the tens digit is 7. Again, 7 is one less than the original number 8.
We can observe this pattern with any original number. The tens digit of the answer is always one less than the original number.
Conclusion:
Therefore, when using the "Amazing Facts of Nine" trick, the tens digit of the answer represents one less than the original number. This is why option 'C' is the correct answer.
When using the "Amazing Facts of Nine" trick, what does the ...
When using the "Amazing Facts of Nine" trick, the tens digit of the answer represents one less than the original number. Additionally, the sum of the tens and ones digits always equals nine. This trick works for single-digit numbers when multiplying by 9.