số chia hết cho 2 :8254,2610

số chia hết cho 5 : 2610 ,1085

số chia hết cho 3 :2167 

chúc bạn học giỏi 

Số chia hết cho 2 là : 8254,2610

Số chia hết cho 5 là : 2610,1085

Số chia hết cho 3 là:2610

Số chia hết cho tất cả các số 2,3,5 là : 26110

ket qua la C.2610

Đặt B=71⁹+71⁸+71⁷+...+71²+71

 71B=71¹⁰+71⁹+71⁸⁺71⁷+...+71²

71B-B=71¹⁰-71

70B=71¹⁰-71=>B=\(\frac{71^{10}-71}{70}\)

Ta có A=70.\(\frac{71^{10}-71}{70}\)

            =71¹⁰-71

vậy còn 70

Cái chỗ ta có A=... tớ nhân với 70 rồi còngif

1.stayed

2.went

3.had

4.was

5.visited

6.were

7.bought

8.saw

9.ate

10.talked

I stayed at my mom’s home yesterday. (stay) 

Hannah went to the theatre last Sunday. (go)

I and my classmates had a great time in Da Nang last year. (have)

My holiday in California last summer was wonderful. (be)

Last January I visited Sword Lake in Ha Noi. (visit)

My grandparents were very tired after the trip. (be)

I bought a lot of gifts for my older brother. (buy)

James and Belle saw sharks, dolphins and turtles at Vinpearl aquarium. (see)

Gary ate chicken and rice for lunch. (eat)

We talked about their holiday in Ca Mau. (talk)

I __stayed___ at my mom’s home yesterday. (stay) ​

Hannah __went____ to the theatre last Sunday. (go)

I and my classmates _had_____ a great time in Da Nang last year. (have)

My holiday in California last summer __was____ wonderful. (be)

Last January I __visited___ Sword Lake in Ha Noi. (visit)

My grandparents _were___ very tired after the trip. (be)

I ____bought___ a lot of gifts for my older brother. (buy)

James and Belle ___saw____ sharks, dolphins and turtles at Vinpearl aquarium. (see)

Gary __ate___ chicken and rice for lunch. (eat)

We _talked hay told___ about their holiday in Ca Mau. (talk)

~ Hok T ~

1, is buying

2, isn't studying

3, Is she running

4, is eating

5, What are you waiting for?

6, aren't trying

7, are having

8, are traveling

9, is drinking

10, is speaking

HỌC TỐT NHA!

thanks Long

thông minh + thích mới mẻ

ái chà chà mk thông minh lại còn thích mới mẻ nữa cơ ạ hihihi

mk thông minh + mới mẻ quá chuẩn

Bạn sai đề rồi, phải là P = 70(71^9 + 71^8 + ... + 71^2 + 72) + 1 mới đúng

Ta có: P = 70(71^9 + 71^8 + ... + 71^2 + 72) + 1

             = (71 - 1)(71^9 + 71^8 + ... + 71^2 + 71 + 1) + 1

             = (71^10 - 1^10) + 1

             = 71^10 -1 + 1

             = 71^10 = (71^5)^2

Vậy P là một số chính phương.

k cho mik nha.