Find the difference between sum of all even numbers and all odd numbers between 1 to 20 .
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Answered by
96
Answer:
sum of even numbers from 1-20are...
2+4+6+8+10+12+14+16+18+20=110
sum of odd numbers are..
1+3+5+7+9+11+13+15+17+19=100
the difference is =110-100=10
hope it's helpful to you..
Answered by
0
From 1 to 20
Total even number = 10 = n
= sum of the first 'n' even numbers from 1 to 20
= n(n+1) = 10× 11 = 110
From 1 to 20
Total odd number = 10 = n
= sum of the first 'n' odd number from 1 to 20
= n² = 10² = 100
therefore , required difference = 110 - 100 = 10
#SPJ3
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