Upon adding the even and odd numbers from 1 to 20, you should arrive at the sum of 210.
=====
...QBASIC program...
sumTotal% = 0
CLS
PRINT "PROGRAM: Add numbers 1 to 20"
PRINT "Number", "Total"
FOR eachLoopNo% = 1 TO 20
PRINT eachLoopNo%,
sumTotal% = sumTotal% + eachLoopNo%
PRINT sumTotal%
NEXT
PRINT "Sum total ="; sumTotal%
...Output...
PROGRAM: Add numbers 1 to 20
Number Total
1 1
2 3
3 6
4 10
5 15
6 21
7 28
8 36
9 45
10 55
11 66
12 78
13 91
14 105
15 120
16 136
17 153
18 171
19 190
20 210
Sum total = 210
Press any key to continue...
Chat with our AI personalities
25
2 x 2 x 5 = 20 20 is even.
The first 20 odd numbers are: 13579111315171921232527293133353739.
The difference is 2. (23 - 21 = 2).If we are talking about two odd numbers that come right after the number 20 then we mean the two consecutive odd numbers after 20.The difference between any consecutive odd numbers (or between any consecutive even numbers) is always 2.
To make 20 with three different odd numbers, we can use the numbers 1, 7, and 12. 1 + 7 + 12 = 20. These numbers are odd because they cannot be evenly divided by 2. It's important to note that there are multiple combinations of three odd numbers that can add up to 20, such as 3 + 9 + 8 or 5 + 11 + 4.