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a number is between 20 and 30 and is three times the sum of its digits. what is the number?

Sagot :

soellerssean73

Answer:

The only multiples of 3 between 20 and 30 are 21, 24, and 27. Only 27 satisfies the condition that it is 3 times the sum of its digits.

Step-by-step explanation:

MrRoyal

The number between 20 and 30 that is equal to three times the sum of its digits is 27

How to determine the number?

The numbers between 20 and 30 are:

21, 22, 23, 24, 25, 26, 27, 28, 29

Add each digit of the numbers and multiply by 3.

So, we have

21 ⇒ 3 * (2 + 1) = 9

22 ⇒ 3 * (2 + 2) = 12

23 ⇒ 3 * (2 + 3) = 15

24 ⇒ 3 * (2 + 4) = 18

25 ⇒ 3 * (2 + 5) = 21

26 ⇒ 3 * (2 + 6) = 24

27 ⇒ 3 * (2 + 7) = 27

28 ⇒ 3 * (2 + 8) = 30

29 ⇒ 3 * (2 + 9) = 33

In the above computation, the true correct term of the sequence is

27 ⇒ 3 * (2 + 7) = 27

Hence, the number is 27

Read more about sequence at:

https://brainly.com/question/6561461

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