3.Tính tổng
D=\(\dfrac{1}{6}\) + \(\dfrac{1}{12}\) + \(\dfrac{1}{20}\) + \(\dfrac{1}{30}\) +\(\dfrac{1}{42}\) + \(\dfrac{1}{56}\)
a) 10 em
b) 6 em
c) 12 em
d) 12 em
đề bài ko rõ ràng
Phương pháp lọc á!!
Make sentences, using the words and phrases given.
1.Da Nang / attract / lots / tourists / because / it / most beautiful / beaches / Viet Nam.
2.In / first half / the match / our team / score / goal.
3.you / watch / the men's báketball final / TV / last night ?
4.His father / teach / him / how / play / football / a very young age.
5.That singer / live show / theater / be / TV / now.
6.Game show / this week / test / knowledge / rain forests.