Question

the set of odd integers between 2 andb20​

Answer 1

3,5,7,9,11,13,15,17,19

Answer 2

Answer:

100

Step-by-step explanation:

The numbers which give remainder 1 when divided by two are called odd numbers or odd integers.

Thus the odd integers between 0 and 20 are:-

1,3,5,7,9,11,13,15,17 and 19.

To find out their sum, we don't need to calculate manually. There is a trick :-

1+3+5+7+9+11+13+15+17+19=>

1 + 19= 20

3 + 17=20

5 + 15=20

7 + 13=20

9 + 11=20.

Thus 1+3+5+7+9+11+13+15+17+19=

20+20+20+20+20=20×5=100.

Thus, the sum of odd integers between 0 and 20 is 100.

Hope this helps. Mark as brainliest.