Question

find the rersult of subtracring the sum of all integer between 20 and 30 from the sum of all integer from 20 to 30​

Answer 1

Answer:

50

Step-by-step explanation:

let x=sum of all integer between 20 and 30

x=(21+22+.......+29)

Let y=the sum of all integer from 20 to 30​

y=20+21+22+----------------+30

so y-x=(20+21+22+----------------+29+30)-(21+22+----------------+29)

=20+30

=50