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If a two-digit number less than 40 is divisible by only one prime number The sum and the difference between the digits is also a prime number thus what is the number?
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∙ 2014-08-15 18:21:58
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∙ 2014-08-15 18:21:58
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How do you know 112 is divisible by 4?
Because the last two digits are divisible by 4.
Is 189 divisible by 2 3 4 5 6 9 and 10?
No. 189 is only evenly divisible by 3 and 9 (from the set provided). Using the following rules of divisibility on the number 189: Divisible by 2? No - the number is not even Divisible by 3? Yes - the sum of the digits (1 + 8 + 9 = 18) is divisible by 3 Divisible by 4? No - the last two digits are not evenly divisible by 4 Divisible by 5? No - the last digit is not a 0 or a 5 Divisible by 6? No - the number is not even Divisible by 9? Yes - the sum of the digits is divisible by 9 Divisible by 10? No - the number is not divisible by 2 or 5
How do you know if a number is divisible by 3?
Answer - How do you tell if a number is divisible by 3?you add all the digits in the number and see if that number can be divided by 3 Answer - A whole number is divisible by 3 if the sum of its digits is divisible by what?Three (3) Examples:* 27 -- 2+7=9 * 13452 -- 1+3+4+5+2=15 -- 1+5=6If the sum of the digits is divisible by 3, the number is also divisible by 3. Or just do the division.
A number is divisible by 8 the number formed by its last?
If the last three digits of a number are divisible by 8, the whole number is divisible by 8.
Is 18324 divisible by both 4 and 9?
18324 is divisible by both 4 and 9. 18324 / 4 = 4581 18324 / 9 = 2036 You can simply check if a number is divisible by 4 if the last two digits are divisible by 4. The last two digits are 24. 24 is divisible by 4. (24/4=6) An easy way to check if a number is divisible by 9 is if sum of the digits are divisible by 9. 18324 1+8+3+2+4 =18 18 1+8 =9 9 is divisible by 9, so 18324 is divisible by 9.
You are divisible by 4 and 10 the difference between your two digits is 8 what are you?
You are 80.
What is divisible by 4 and 10 and has the difference of 8?
80 is divisible by 4 and 10 and its digits differ by 8.
Dan found a twodigit odd number. one of its digits was half the other. the number was greater than 50. what was it?
63
What is the difference between the greatest and the smallest numbers which are divisible by 8 and are formed by using the digits 2 4 and 6 each only once?
The difference is 360.
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.
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 are the divisibility rules for 11?
The difference betweenthe sum of the digits in odd positions andthe sum of the digits in even positionsis divisible by 11.
What is the test for divisibility of 11?
Split the number into its alternate digits.Sum the digits in each setIf the difference between their sums is zero (0) or divisible by 11 then the original number is divisible by 11.ExamplesIs 1289324 divisible by 11?Split into alternate digits: 1_8_3_4 and _2_9_2 Sum each set of digits:1_8_3_4 -> 1+8+3+4 = 16_2_9_2 -> 2+9+2 = 13Difference between the sums: 16 - 13 = 3, not divisible by 11; so original number 1289324 is not divisible by 11.Is 19407278 divisible by 11?Split into alternate digits: 1_4_7_7 and _9_8_2_6 Sum each set of digits:1_4_7_7 -> 1+4+7+7 = 19_9_0_2_8 -> 9+0+2+8 = 19Difference between the sums: 19 - 19 = 0; so original number 19407278 is divisible by 11.
Is a number divisible by 9 if the difference of the digits is divisible by 3 and 9?
Yes. If a number is divisible by 9 it is also divisible by 3 so "is divisible by 3 and 9" can just say "is divisible by 9". The only numbers that this can be applied to is 9, 90, 900, 9000 and so on. The difference of digits can only be 9 if one of them is 9 and all of the rest of the digits are 0, since there is no digit greater than 9 (in base 10) and 9 minus anything greater than 0 is less than 9.
What four digit number is divisible by 123456789 with a remainder of one?
A number divisible by 123456789 must be 0 or bigger than 123456789. It must, therefore have 1 digit or 9 digits (or more). A remainder of 1 makes no difference to the number of digits. In any case, there can be no number of 4 digits that is divisible by 123456789.
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 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.
