 |  Number System 30 Flashcards |  Start |
 | What is the definition of a rational number? |  Card: 1 / 30 |
| A rational number is a number that can be expressed in the form of p/q, where p and q are integers and q is not equal to zero. | Card: 2 / 30 |
| Fill in the blank: The greatest n-digit number is formed by writing the digit ___ as many times as the value of n. | Card: 3 / 30 |
| 9 | Card: 4 / 30 |
| True or False: The place value of a digit in a number increases as you move from right to left. | Card: 5 / 30 |
| True | Card: 6 / 30 |
| What is the additive identity in mathematics? | Card: 7 / 30 |
| The additive identity is 0, because adding 0 to any number does not change the number. | Card: 8 / 30 |
| Fill in the blank: The sum of the digits of a number must be divisible by ___ for the number to be divisible by 3. | Card: 9 / 30 |
| 3 | Card: 10 / 30 |
| What is the difference between a prime number and a composite number? | Card: 11 / 30 |
| Prime numbers have unique factors.
| Card: 12 / 30 |
| Riddle: I am a number that is divisible by both 2 and 3, but not by 5. What am I? | Card: 13 / 30 |
| Any even multiple of 3 that does not end in 0 or 5, such as 6, 12, 18. | Card: 14 / 30 |
| True or False: Every natural number is also a whole number. | Card: 15 / 30 |
|  Unlock all Flashcards with EduRev Infinity Plan Starting from @ ₹99 only | |
| True | Card: 16 / 30 |
| What is the relationship between the digits of a number and its face value? | Card: 17 / 30 |
| The face value of a digit in a number is the value of the digit itself, regardless of its position in the number. | Card: 18 / 30 |
| Fill in the blank: The smallest prime number is ___. | Card: 19 / 30 |
| 2 | Card: 20 / 30 |
| How do you determine if a number is even? | Card: 21 / 30 |
| A number is even if its last digit is 0, 2, 4, 6, or 8. | Card: 22 / 30 |
| What is the multiplicative identity? | Card: 23 / 30 |
| The multiplicative identity is 1, because multiplying any number by 1 does not change the number. | Card: 24 / 30 |
| Riddle: What has a value of 1 when multiplied by any number, but does not change that number? | Card: 25 / 30 |
| 1, the multiplicative identity. | Card: 26 / 30 |
| Fill in the blank: A composite number must have at least ___ factors. | Card: 27 / 30 |
| Three | Card: 28 / 30 |
| What is the rule for determining if a number is divisible by 10? | Card: 29 / 30 |
| A number is divisible by 10 if it ends with a 0. | Card: 30 / 30 |
| Completed! Keep practicing to master all of them. |  Restart |
