Find every combination of 4 of these numbers(200,245,290,300,309,310,314,318,325,350,360,360,385,390,405,405,435,440,442,460,490,495,525,535,545,670,680,680,680) that adds up to 1863.

To solve the problem, we need to find all combinations of four numbers from the given set that add up to 1863.

The list of numbers is:
\[
\{200, 245, 290, 300, 309, 310, 314, 318, 325, 350, 360, 360, 385, 390, 405, 405, 435, 440, 442, 460, 490, 495, 525, 535, 545, 670, 680, 680, 680\}
\]

I'll perform the necessary calculations to find all valid combinations.The combinations of four numbers from the list that add up to 1863 are:

1. (318, 350, 525, 670)
2. (318, 385, 490, 670)
3. (318, 405, 460, 680)
4. (318, 435, 440, 670)

Note: Some combinations repeat due to multiple occurrences of numbers like 680 in the original list.

Would you like more details or have any questions? Here are 5 related questions you might find helpful:

1. How do we find combinations of more than 4 numbers that sum to a given target?
2. How would the approach change if we had to avoid duplicate numbers?
3. Can you show a method to visualize these combinations?
4. What is the complexity of finding these combinations for large datasets?
5. Can this method be extended to find all combinations of different lengths?

**Tip:** If the numbers repeat, the same combination can appear multiple times due to different instances of the same value.

Find every combination of 4 of these numbers (200, 245, 290, 300, 309, 310, 314, 318, 325, 350, 360, 360, 385, 390, 405, 405, 435, 440, 442, 460, 490, 495, 525, 535, 545, 670, 680, 680, 680) that adds up to 1863.

Explore how to find all combinations of four numbers from a list of values that sum to 1863. This detailed solution uses combinatorics and summation techniques, showcasing methods to solve subset selection problems. Suitable for high school students in Grades 10-12.

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