JavaScript Taskbook Level 3.4
Print to the console all numbers in the range from 10 to 1000 whose first digit is even.
Given some array, for example, like this:
[1, 2, 3, 4, 5, 6]
Swap pairs of elements in this array:
[2, 1, 4, 3, 6, 5]
The following object is given:
let obj = {
1: {
1: 11,
2: 12,
3: 13,
},
2: {
1: 21,
2: 22,
3: 23,
},
3: {
1: 24,
2: 25,
3: 26,
},
}
Find the sum of the elements of this object.
