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this would be explained on the basis of two FACTS below.......
sum of two odd numbers are always even and
sum of to even numbers are also always even
then how 6 odd numbers (consider 3 pairs, 9 5 3 1 being odd numbers) can make an odd number 21..!!
SO SIMPLE
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9999555533331111 whose 6 digits sum is 21?
You can't get six odd numbers to add to an odd number in this Universe, so... a little creative thinking (= "cheating") is needed... 3 + 3 + 3 + 1 + 11 uses 6 digits and the sum is 21... ... if you want to be REALLY "creative", turn one of the nines upside down and you could have 6 + 5 + 5 + 3 + 1 + 1...
What two digit number is 7 times the sum of its digits?
21
Name a number who's sum of digits less than 4?
21
Is 6618 divisible 3 6 and 9?
Yes, yes, and no. 3- sum of digits must be multiple of 3. 6- sum of digits must be multiple of 3 and number must be even (multiple of 2). 9- sum of digits must be multiple of 9. (The sum of the digits here is 21.)
What are the rules dividing by 3?
If the sum of the digits of the number is a multiple of 3 then that number is divisible by 3. For example: 156351 The sum of the digits is 1+5+6+3+5+1 = 21 which is divisble by 3 156351/3 = 52117
What 6 digits from 9999555533331111 have the sum of 21?
9 + 5 + 3 + 3 + 1 + 1 = 21
9999555533331111 choose any 6 digits whose addition is equals 21?
3 + 3 + 3 + 1 + 11 = 21
9999555533331111 whose 6 digits sum is 21?
You can't get six odd numbers to add to an odd number in this Universe, so... a little creative thinking (= "cheating") is needed... 3 + 3 + 3 + 1 + 11 uses 6 digits and the sum is 21... ... if you want to be REALLY "creative", turn one of the nines upside down and you could have 6 + 5 + 5 + 3 + 1 + 1...
What two digit number is 7 times the sum of its digits?
21
What is the smallest whole number that is equal to seven times the sum of its digits?
21
Name a number who's sum of digits less than 4?
21
If the sum of the digit is divisible by 3 the number is divisible by?
That means the number itself is divisible by three. the sum of the digits in 144, for example, is 9. 144 divided by 3 is 48. The sum of the digits in 21 is 3. 21 divided by 3 is 7.If the number is an even number and the sum of the digits is divisible by 3, the number is also divisible by 6. 144 is even and the sum of the digits is divisible by 3, so 144 is also divisible by 6. 144/6 = 24. And finally, if the sum is divisible by 9, the number itself is also divisible by 9. 27 is an example of this.
Is 6618 divisible 3 6 and 9?
Yes, yes, and no. 3- sum of digits must be multiple of 3. 6- sum of digits must be multiple of 3 and number must be even (multiple of 2). 9- sum of digits must be multiple of 9. (The sum of the digits here is 21.)
What is the smallest whole number where the sum of the digits is 21?
The smallest whole number where the sum of the digits is 21 is 189. This number has a digit sum of 1+8+9 = 18. To find the smallest number with a digit sum of 21, we need to increase the hundreds digit by 1 and decrease the units digit by 1, resulting in 198.
What are the rules dividing by 3?
If the sum of the digits of the number is a multiple of 3 then that number is divisible by 3. For example: 156351 The sum of the digits is 1+5+6+3+5+1 = 21 which is divisble by 3 156351/3 = 52117
Explain why 21 is not a prime number?
21 has factors other than 1 and itself, so it is not a prime number. For example, it is divisible by 3. (You can check this by adding the digits of the number: 2 + 1 = 3. If the sum of the digits is divisible by 3, the number is also divisible by 3.) Therefore, 21 is a composite number.
What is the sum of the digits 6 1 5?
21 is the answer.. dahhh
