1 x 21 = 21. 3 x 7 = 21. 7 x 3 = 21. 21 x 1 = 21.
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What times what will give you 21?
We know that 1 multiplies with 21 to make 21, so they are both factors. 2 is not a factor of 21, because we cannot multiply it with another whole number to make 21.3 is a factor of 21, because it multiplies with 7 to make 21. Therefore the factors of 21 are 1, 3, 7 and 21.
What is a pair of 21?
Factor pairs of the number 21 are the numbers that result in the original number multiplying them together.
Pair Factors of 21.
| Positive pairs | Negative pairs |
|---|---|
| 1 × 21 = 21; (1, 21) | (-1) × (-21) = 21; (-1, -21) |
| 3 × 7 = 21; (3, 7) | (-3) × (-7) = 21; (-3, -7) |
What multiplication is equal to 22?
1 x 22 = 22. 2 x 11 = 22. 11 x 2 = 22. 22 x 1 = 22.
What equals 24 multiply?
The factor pairs of 24 are: 1 x 24, 2 x 12, 3 x 8, and 4 x 6.
How do you get 21?
If a player’s first two cards are an ace and a “ten-card” (a picture card or 10), giving a count of 21 in two cards, this is a natural or “blackjack.” If any player has a natural and the dealer does not, the dealer immediately pays that player one and a half times the amount of their bet.
What are all the multiples of 21?
Solution: The first 10 multiples of 21 are, 21, 42, 63, 84, 105, 126, 147, 168, 189 and 210.
What numbers can I divide 21 by?
When we list them out like this it’s easy to see that the numbers which 21 is divisible by are 1, 3, 7, and 21.
What is the smallest factor of 21?
21 is a composite number. 21 = 1 x 21 or 3 x 7. Factors of 21: 1, 3, 7, 21.
Which is the following number is not a factor of 21?
Answer: 6 is not the factor of 21.
What can equal 23?
The factors of 23 are 1 and 23.
Since 23 is a prime number, therefore, it has only two factors. Factor pairs of the number 23 are the natural numbers but not a fraction or decimal number.
How many factors does 20 have?
6 factors
The factors of 20 are 1, 2, 4, 5, 10, 20. Therefore, 20 has 6 factors.
What can equal 48?
The factor pairs of the number 48 are: 1 x 48, 2 x 24, 3 x 16, 4 x 12, and 6 x 8. When you multiply each of these factor pairs together, you get 48….
What can equal 99?
1 x 99 = 99. 3 x 33 = 99. 9 x 11 = 99. 11 x 9 = 99.
What can you multiply to get 18?
Answer and Explanation:
- 1 * 18 = 18.
- 2 * 9 = 18 and.
- 2 * 6 = 18.
What multiplied equals 42?
You can think of factors as the numbers that you multiply to get another number. In this case 2, 3, 6, and 7 are all numbers you can multiply to get 42.
Is blackjack the same as 21?
If you are wondering, are 21 and blackjack the same, then the answer is yes. Blackjack and 21 refer to the very same game, with the same rules and payouts. In other words, “21” is basically another name given to blackjack as it requires the players to get a sum total of 21 in their hands to get the blackjack.
How do you win the game 21?
The 21 game
The winning strategy for the two-player version of this game is to always say a multiple of 4; it is then guaranteed that the other player will ultimately have to say 21; so in the standard version, wherein the first player opens with “1”, they start with a losing move.
Is 21 a multiple of blank?
Because 21 can be written as 3 × 7, it is a multiple of 3 (and a multiple of 7). ), because the word multiple is generally (always in K–12 mathematics) used only in the context of integers.
Is 21 a multiple of 6 yes or no?
Multiples of 6 are: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, … Multiples of 7 are: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70,A common multiple is a whole number that is a shared multiple of each set of numbers.So, the common multiples of 6 and 7 are 42, and 84.
What are the first 4 multiples of 21?
We have an infinite number of multiplies for any given number. The very first multiple of the given number by multiplying that number by one. Therefore , the first four multiples of $21$ are $21,42,63,84$. Note: Multiples of the given number gives integer when divided by that number.