2+4+6+8+10+12+14+16+18+20+22+24+26+28+30=240
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The sum of the first 15 positive even numbers is 240. (Simply square 15, then add 15 to the result: 15 x 15 = 225. 225 + 15 = 240).
The sum of the first 5 numbers is 15. 1+2+3+4+5=15
#include<stdio.h> #include<conio.h> void main() { int c=1,i; unsigned int s=0; clrscr(); for(i=1,(i<=15;i++)) { if(i%2==0) { s=s+i; c=c+i; } } printf("/n sum of the first 15 even numbers is%d",s); printf("/n square of the sum is: %d",(s*s)); getch(); }
Must be the 2 odd numbers, 9 & 15 (P = 135, S = 24)
To find the sum of all odd numbers between 9 and 15, we first identify the odd numbers between these two values, which are 9, 11, 13, and 15. Next, we add these numbers together: 9 + 11 + 13 + 15 = 48. Therefore, the sum of all odd numbers between 9 and 15 is 48.