Question

11+12+13+...........+40 find sum​

Answer 1

Answer:

50

Step-by-step explanation:

11+12+13+14=50

Answer is 50

Please mark as brainliest!

Answer 2

Answer:

765

Step-by-step explanation:

formula for this is n(n+1)/2

=40(40+1)/2

=40(41)/2

=1640/2

=820

Now,

10(10+1)/2

=110/2

=55

820 - 55 = 765

mark as brainliest please

thanks!