0
9
18 = 9
27 =9
36 = 9
etc
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What is the sum of the multiples of 9?
There are infinitely many multiples of 9 and it is not possible to add them all.
How many members are there between 1 to 100 which are divisible by 9 and the sum of two digits is 9?
10. They are the first ten multiples of 9.
What is noticeable about the sum in the multiples of 9?
That the sum of its digits add up to 9 as for example 9*9 = 81 and 8+1 = 9
What is the first 3 nonzero multiples of 5 and 9?
They are the first three multiples of LCM(5, 9), that is, the first three multiples of 45.
First five non-zero multiples of 9?
The first 5 multiples of 9 are: 9, 18, 27, 36, and 45.
What is the sum of the first 6 multiples of 9?
The first 6 multiples of 9 are 9, 18, 27, 36, 45 and 54. Their sum (total) is 189. In other words, 1x9 + 2x9 + 3x9 + 4x9 + 5x9 + 6x9 = 21x9 = 189.
What is the sum of the first 10 multiples of 3?
The sum of the first 10 multiples of 3 is 165.
What is the sum of the multiples of 9?
There are infinitely many multiples of 9 and it is not possible to add them all.
How many members are there between 1 to 100 which are divisible by 9 and the sum of two digits is 9?
10. They are the first ten multiples of 9.
What are the sum of the first five multiples of 9 in summation notation?
.....5 .....Σ 9r ...r=1
What is the sum of the first 10 multiples of 9?
9, 18 27 36 45 54 63 72 81 90
What is noticeable about the sum in the multiples of 9?
That the sum of its digits add up to 9 as for example 9*9 = 81 and 8+1 = 9
What is the sum of the first 25 multiples of 12?
The sum of the first 25 numbers is 25*26/2 = 325 So the sum of the first 25 multiples of 12 is 325*12 = 3900
What is the sum of the first 15 multiples of 8?
Sum of the first 15 positive integers is 15*(15+1)/2 = 120 Sum of the first 15 multiples of 8 is 8*120 = 960
What are the three frist multiples of 3 and 9?
The first three multiples of 3 are 3, 6, 9 The first three multiples of 9 are 9, 18, 27 As the lowest common multiples of 3 and 9 is 9, the common multiples of 3 and 9 are the multiples of 9, thus: The first three common multiples of 3 and 9 are 9, 18, 27
Can you think of another number pattern in multiples of 9?
The digital sum of multiples of 9 always add up to 9 as for example 9*9 = 81 and 8+1 = 9
What is the sum of the first 5 multiples of 6?
90
