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The sum of any two-digit number and the number formed by reversing the digits is always divisible by what?
Wiki User
∙ 14y ago
The sum of any two-digit number and the number formed by reversing the digits is always divisible by 11.
Why?The algebraic proof is as follows:
(10x+y) + (10y+x) = 11x + 11y = 11(x+y)
Wiki User
∙ 14y ago
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A number is divisible by 4 if the tens and one digits.?
A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.
Is 1 trillion 17 a prime number?
Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.
What is the rule for divide by 4?
Four can always divide into the last two digits of a number divisible by 4.
Is 3 divisible by 518?
If sum of digits of a number is divisible by 3 then the number is divisible by 3. Sum of digits = 5+1+8 = 14 and 14 is not divisible by 3. So 518 is not divisible by 3.
Is 26 divisible by 9?
26 is not divisible by 9 because the sum of the digits is not divisible by
Does reversing the order of the digits of a two digit prime number always result in a prime number?
No, reversing the order of the digits of a two-digit prime number does not always result in a prime number.
Dan found a twodigit odd number. one of its digits was half the other. the number was greater than 50. what was it?
63
Is a number always divisible by 4 if the sum of the digits is 8?
No. 26 for instance the sum of the digits is 8 but not divisible by 4. 32 the sum of the digits is 5 but divisible by 4 The rules for some other numbers are 2 all even numbers are divisible by 2 3 The sum of the digits is divisible by 3 4 The last 2 numbers are divisible by 4 5 The number ends in a 0 or 5 6 The sum of the digits is divisible by 3 and is even 7 no easy method 8 The last 3 numbers are divisible by 8 9 The sum of the digits is divisible by 9
A number is divisible by 4 if the tens and one digits.?
A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.
Is 760 divisible by four?
Yes. For future reference, if the last two digits of any number are divisible by 4, then the number itself will always be divisible by 4.
A number is divisible by 3 if the blank is divisible by 3?
A number is divisible by 3 if the sum of its digits is divisible by 3.
What is the rule for divide by 4?
Four can always divide into the last two digits of a number divisible by 4.
Is 1 trillion 17 a prime number?
Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.
Indentify the conclusion what conditional a number is divisible by 3 if the sum of the digits of the number is divisible by 3?
If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.
What are the divisibility rules for 72?
If the last 3 digits are divisible by 8 and the sum of the digits are divisible by 9.
Is 10000 divisible by three?
No. If a number is divisible by three, the sum of its digits will be divisible by three. Obviously, the sum of the digits of 10000 is 1, and 1 is not divisible by 3, so 10000 is not divisible by 3.
What digits divisible by 4?
4 and all of its multiples are divisible by 4. They end in even digits. No number that ends in an odd digit is divisible by 4.
