Test for Whole Numbers

To test whether a number is a whole number, we need to check if it is an integer or not. An integer is a whole number that can be positive, negative, or zero. Therefore, any number that is not an integer is not a whole number.

To check if a number is an integer, we need to look at its decimal part. If the decimal part is zero, then the number is an integer and hence a whole number. If the decimal part is not zero, then the number is not an integer and hence not a whole number.

For example, let's consider the number 5. This number has no decimal part and hence is an integer. Therefore, it is a whole number. On the other hand, let's consider the number 5.5. This number has a decimal part of 0.5, which means it is not an integer and hence not a whole number.

Understanding: Indian System of Numeration

The Indian system of numeration is a place-value system that originated in India and is widely used in the Indian subcontinent. It is a decimal system, which means it uses ten digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) to represent all numbers. The value of each digit depends on its position in the number.

The Indian system of numeration uses the following place values:

- Ones
- Tens
- Hundreds
- Thousands
- Ten thousands
- Lakhs (1 lakh = 100,000)
- Crores (1 crore = 10,000,000)

For example, let's consider the number 245,678. In this number, the digit 8 is in the ones place, the digit 7 is in the tens place, the digit 6 is in the hundreds place, the digit 5 is in the thousands place, the digit 4 is in the ten thousands place, and the digit 2 is in the lakhs place. Therefore, the value of this number is:

8 x 1 + 7 x 10 + 6 x 100 + 5 x 1000 + 4 x 10000 + 2 x 100000

= 8 + 70 + 600 + 5000 + 40000 + 200000

= 247,678

The Indian system of numeration is a very efficient way to represent large numbers and is widely used in the Indian subcontinent.

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