Javascript array operations map filter reduce output

Easy

What will be the output of the following code, and why?

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The map function creates [12, 2.6667, 36] because elements at even indexes are multiplied by factor and elements at odd indexes are divided by factor. Then, the filter keeps only values greater than 10, resulting in [12, 36]. The reduce then sums these values: 12 + 36 = 48. Therefore, the final result is 48.

The map function produces [12, 2.6667, 36]. After filtering for values greater than 10, we get [12, 36]. The reduce then adds these: 12 + 36 = 48. So, the final result is 48.

The map function produces [12, 2.6667, 36]. The filter keeps values greater than 10, so the array becomes [12, 36]. The reduce adds them, resulting in 12 + 36 = 48. Therefore, the final result is 48.

The map function produces [12, 2.6667, 36]. After filtering, only [12, 36] remain. However, the reduce incorrectly calculates the sum, giving 12 + 36 = 40.

1let items = [4, 8, 12];
2let factor = 3;
3
4let result = items.map((item, index) => {
5    if (index % 2 === 0) {
6        return item * factor;
7    } else {
8        return item / factor;
9    }
10}).filter(item => item > 10).reduce((sum, item) => sum + item, 0);
11
12console.log(result);

What will be the output of the following code, and why?

Hint