Question

Write a program to find sum of odd numbers between 1 and 10

Answer 1

Step1: Count the total odd numbers

1: exist in between 1 to 10. Here it is 5

Step2: Multiply 5×5 = 25

2: So the sum of all odd numbers from 1 to 10 is 25.

You can also calculate all odd numbers between 1 to n numbers from this trick

I hope u understand this

Thanks

Answer 2

Answer:

import java.util.*;

class SumOfNum

{

Public static void main(string args[])

{

int sum=0;

for(int i=1;i<=10;i++)

{

if(i%2!=0)

{

Sum=sum+i;

}

}

System.out.println("The sum of 10 odd numbers are:"+sum);

}

}