Question

(1,3,5,7,9,11,13,15,17,19,21,23,25,27,29) add three numbers what be 30.?+?+?=30

Answer 1

The sequence which is given in this question is known as Arithmetic Sequence we concluded that because the difference between all the numbers is 2 and it is constant.

Now we will make the pairs:

(1,29)  

(3,27)

(5,25)

(7,23)

(9,21)

(11,19)

(13,17)

(15,15)

The sum of each pair is 30.

In this way we can get 30. This is when the situation is for adding 2 numbers.

If we solve it with three numbers we can only do that with the help of factorial method:

3! + 11 + 13 = 30

3!+9+15= 30

3!+3!+3!+3!+3!= 30

11+1+3!+3!+3!= 30

5+7+3!+3!+3!= 30

11+7+3!+3!+3!= 30

3+5+7+9+3!= 30

1+5+7+11+3!=30

1+1+3!+11+13=30

1+3+5+3!+15=30