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# Multiples

#here’s another broken piece of code #the result is always too low num1=int(input()) num2=0 for i in range(num1): if (3*i) <= num1: num2 = num2 + (3*i) elif (5*i) <= num1: num2 = num2 + (5*i) print(num2)

12 Answers

+ 4

Trey ,
how can you expect to get help without giving a clear task description? what should the code do?

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Please show your expected result.
Syntax wise the code runs without error, and nobody knows how "the result is always too low."

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Trey in that case then your logic is wrong. If using 3*i and if 5*i then only one will ever be be hit since it is an if, elif.
If you change the elif to an if, then it would simultaneously calculate 5*i. Probably want to store that in another variable though.
You would need to do something like Stefanoo suggested.
You would also need to specify which number you want multiples of, 3 or 5.
Or track both with different variables and then verify that they are less than num1.
You could also do a while loop instead.

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Trey
I am not sure what the result should be, but if you switch the conditions around then you will get a higher number.
If(5*i)
....
Elif(3*i)
....

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It's like the others already said without content we don't know how to help.
But you can write
for i in range(1, num1):
...
Because the first number will be 0 and this has no effect in your code.
You could use * instead of + to get higher results. But this is just wildly out of the air.
num2 = num2 * (3*i)
or shorter
num2 *= (3*i)

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It did get bigger, but not enough The Darkness

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Input is 100, output should be 2318, but is 2103 Wong Hei Ming

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Nothing changed, Stefanoo

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It should calculate the sum of all the multiples of 3 or 5 below a given number

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Can you give a smaller input, says 20, your expected result, AND the steps how num2 is calculated line by line as you expected?
Most likely some numbers are missing, such as 15 because it can be multiply by 3 AND 5.
Also, even the input is 100 your code return 1683, neither 2318 or 2103.

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Trey I think that you math may be off of you are expecting the results that you mentioned.
For multiples of 5 we would have the following:
5, 10, 15 ... 90, 95, 100
This would result in 20 multiples, giving us 10 pairs of 105.
105 * 10 = 1050
Multiples of 3 would give us the following:
3, 6, 9 ... 93, 96, 99
This would result in 33 multiples, giving us 16 pairs of 102 and a median of 51.
102*16+51 = 1683
https://code.sololearn.com/cBdMMaOwsq9h/?ref=app

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ok thx