The multiples of 12 are 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144,…
What is the sum of first 100 multiples of 12?
60600
So, the sum of first 100 multiples of 12 is 60600.
What is the sum of the first 100 multiples of 10?
From mulplying multiples of 10 from 910 to 1000 are 12 . Number of Zeroes = Sum of zeros in G.P. from 1 to 101 with a=10 r=10 n=100 or equal to sum of an A.P. with a=2 d=1 n=100 Last term l = 101. Answer = (n/2)*(a+l) = 50*(2+101) = 5,150 number of zeroes.
What is the sum of first five multiples of 3?
45
The first five multiples of 3 are 3, 6, 9, 12, and 15. Hence, the sum of first five multiples of 3 is 45.
How to find the sum of all the multiples of 3 or 5 below 1000?
How to solve this problem, I can not figure it out: If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000. The previously posted answer isn’t correct.
Which is the sum of the first two numbers?
The sum of the first numbers 1+2+3+4+…+n is n (n+1)/2. The sum of the first few multiples of k, say k+2k+3k+4k+…+nk must be kn (n+1)/2. Now you can just put these ingredients together to solve the problem. Since we are asked to look for numbers below 1000, we shall look at numbers up to the number 999.
Do you multiply or add the sum of two numbers?
If you are asked to work out the product of two or more numbers, then you need to multiply the numbers together. If you are asked to find the sum of two or more numbers, then you need to add the numbers together. Below, we will work through several examples together. In a Nutshell “Product” means multiply. “Sum” means add.
Can you find a sum for any multiple of 7?
If you allow negative numbers, you can find a sum for any multiple of 7 easily. Each time you add one number either side of the sum, your sum increases by 7, e.g. -1+0+1+2+3+4+5+6+7+8=35… Great! (There’s a way to make this pattern work even without using negative numbers – can you spot it?) Why are all these patterns arising?
