Question by minhanh12344321

02/11/2017 at 18:38

3,7,11,...,95,99,103.

Đố ai trả lời được Toán Nâng Cao đó nha.

tth 03/11/2017 at 20:25

There are: $\dfrac{103-3}{4}+1=26$ in this series:

So their sum is:

$\dfrac{26}{2}\left(3+103\right)=1378$

Ans:...
Dao Trong Luan Coordinator 02/11/2017 at 18:58

There are $\frac{103 - 3}{4} + 1 = 26$ numbers in this series

So their sum are: $\dfrac{26}{2}\left(103+3\right)=1378$
Luân Đào 02/11/2017 at 18:56

There are $\dfrac{103-3}{4}+1=26$ numbers in this series

So their sum is: $\dfrac{26}{2}\left(3+103\right)=1378$

Right 100%