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Frequently Asked QuestionsHow many three digit multiples of 18 have the sum of 18?

How many three digit multiples of 18 have the sum of 18?

Here are some 3-digit multiples of 18 having the sum of digits also equal to 18: 198, 288, 378, 396, 468, 486, 558, 576, 594, 648, 666, 684, 738, 756, 774, 792, 828, 846, 864, 918, 936, 954, 972, 990. total multiples that exist are the following: 198,288,378,468.558,648,738,828, and 918.

What numbers can divide by 18?

When we list them out like this it’s easy to see that the numbers which 18 is divisible by are 1, 2, 3, 6, 9, and 18.

What is the smallest 4 digit multiple of 5?

Answer and Explanation: First 4-digit multiple of 5 is 1000. It is the least 4-digit number and it is multiple of 5.

What is the GCF of 18?

The factors of 18 are 1, 2, 3, 6, 9, 18. The factors of 27 are 1, 3, 9, 27. The common factors of 18 and 27 are 1, 3 and 9. The greatest common factor of 18 and 27 is 9.

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How do you make an 18 table?

To obtain the multiples of 18, add natural numbers to the ten’s digit of the multiples of 8. Hence, the 18 times table is obtained as follows: (1+0)8, (2+1)6, (3+2)4, (4+3)2, (5+4)0, (6+4)8, (7+5)6, (8+6)4, (9+7)2, (10+8)0 = 18, 36, 54, 72, 90, 108, 126, 144, 162, 180.

How do you write 19 tables?

Q4. What is the 19 Table? Ans. The Table of 19 is as follow: 19, 38, 57, 76, 95, 114, 133, 152, 171, 190.

What numbers multiply to 18 and add to 7?

1*18, 2*9, 3*6 that would give the required answer of 18 on multiplication and the addition answer of 7.

Why is 18 not a prime number?

No, 18 is not a prime number. The number 18 is divisible by 1, 2, 3, 6, 9, 18. For a number to be classified as a prime number, it should have exactly two factors. Since 18 has more than two factors, i.e. 1, 2, 3, 6, 9, 18, it is not a prime number.

How many ways can you make 45?

We know that sum of 1,2, 3,…..,8,9 is 45. ( That is (9 x 10)/ 2 = 45. ) (9–8) +(7–5) +(9–6) +(9–5) + 5 + 6+7+8+9 =45. This is one of the way we can write it.

How many ways can 45 be written as the sum of two primes?

Thanks, Kurt! So there are 5 ways that 45 can be written as a sum of consecutive integers. They are: 22 23, 14 15 16, 7 8 9 10 11, and 5 6 7 8 9 10.

How many pins are possible that are multiples of 5?

So when we put 5 to the ones digit, we remain with 2, 3, 7 and 9 that we can distribute to the other digits. And there is 4x3x2x1 different ways to make this. That makes 24 different numbers which is a multiple of 5. The answer is 24.

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What is the greatest 4 digit multiple of 7?

We know that the greatest four digit number is 9,999 . Therefore we multiply 7 by it’s quotient 1428. 1428 × 7 = 9,996 Answer . Therefore , 9,996 is the greatest four digit even number that is multiple of 7 .

How do you find HCF and LCM?

The formula that shows the relationship between their LCM and HCF is: LCM (a,b) × HCF (a,b) = a × b. For example, let us take two numbers 12 and 8. Let us use the formula: LCM (12,8) × HCF (12,8) = 12 × 8. The LCM of 12 and 8 is 24; and the HCF of 12 and 8 is 4.

What does HCF mean in math?

A common factor is a factor that is shared by two or more numbers. For example, a common factor of 8 and 10 is 2, as 2 is a factor of 8, and 2 is also a factor of 10. The highest common factor (HCF) is found by finding all common factors of two numbers and selecting the largest one.

What is a multiple in math?

A multiple in math are the numbers you get when you multiply a certain number by an integer. For example, multiples of 5 are: 10, 15, 20, 25, 30…etc. Multiples of 7 are: 14, 21, 28, 35, 42, 49…etc.

What adds up to 17 and multiplies to 60?

The two numbers that multiply to -60 and add to 17 are -3 and 20. The first step to finding the answer is to create a factor pair list for -60. Factor Pairs for -60: 1, -60.

How is 18 divided evenly?

When we list them out like this it’s easy to see that the numbers which 18 is divisible by are 1, 2, 3, 6, 9, and 18.

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