Gọi tổng đó là A. Ta có:

A=(6¹+6²)+(6³+6⁴)+...+(6²⁰¹³+6²⁰¹⁴)+(6⁰+2015)

  =6¹(6⁰+6¹)+6³(6⁰+6¹)+...+6²⁰¹³(6⁰+6¹)+7x288

  =6¹x7+6³x7+...+6²⁰¹³x7+7x288

  =7(6¹+6³+...+6²⁰¹³+288) chia hết cho 7

Vậy A chia hết cho 7

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Love and grief and motherhood, Fame and mirth and scorn – these are all shall befall, Any woman born – Margaret Widdemer

8.No one understands my ills, nor the terror that fills my breast, who does not know the heart of a mother – Marie Antoinette

9. When you are a mother, you are never really alone in your thoughts. A mother always has to think twice, once for herself and once for her child – Sophia Loren

A mother understands what a child does not say – Khuyết danh

5. You can fool some of the people all of the time, and

You can fool all of the people some of the time, but

You can’t fool mom – Khuyết danh

6. What do girls do who haven’t any mothers to help them through their troubles? – Louisa May Alcott

1. A mother’s love for her child is like nothing else in the world. It knows no law, no pity. It dares all things and crushes down remorselessly all that stands in its path – Agatha Christie

2. Mothers hold their children’s hands for a short while, but their hearts forever – Khuyết danh

3. Being a mother is an attitude, not a biological relation – Robert A Heinlein

Những câu nói hay về mẹ bằng tiếng anh ý nghĩa nhất bạn nhé! , THAM KHẢO NHA

A mother is the best friend anyone could ever ask for. When everyone else turns away, she is the one turning towards you, when you fall, she’s the one that helps you up and when your heart is filled with despair, she’s the one that gives you a glimpse of hope. The day a child is born, so is a mother. The woman was always there but it wasn’t until the second their little baby was born that a mother was born. A mother and her child have a special bond that only they can understand. You can fool most of your friends most of the time, but you can’t fool mom. She sees right through you and always knows what’s wrong. Once she gives you that special hug everything seems okay and even though you never want her to let go, the feeling lasts forever.
There’s a point it every kids life when sitting next to mom in public is the most embarrassing thing possible or kissing mom in front of your friends is pretty much social suicide, but that doesn’t take away from how much we truly love them. From the day you first learn to ride your bike and your first day of school to your high school graduation and the day you get married, every kid says six words that they don’t mean, “You can let go now mom”. Even though we say it, deep down we still want them to hold on. It’s all still a little bit scary and we’re not ready to do it on our own.
Although sometimes it may seem like your mother hates you, and all she ever does is yell at you, recently I discovered she only does this because she loves you. Mothers love their kids as much if not more than you love them and they only want the best for you. She has been through all these things before and she wants to save you from making the same mistakes. She is looking out for you because she hates to see you hurt.
One thing a lot of kids forget to do is tell their mothers how thankful they are for everything they do and how much they love them. On May 13th everyone in the world sets aside one day to do what we should do every single day, tell our moms that we love them and that that will never change. Even though sometimes we yell at our moms and say “you’re the worst mom in the world”, deep down we know it’s quite the opposite. That’s what Mother’s Day is for, to let your mom know that you never meant the harsh words and that you never will.
In conclusion, everyone has a best friend and everyone has the friends that they call their best friend forever, but the only girl in my life that I’m positive will be my best friend forever is my mom. She has been there from my first breath to my first broken heart and I know that no matter what I do she will always be there full of forgiveness and will provide the shoulder I can cry on. Not only is she my best friend but I am her best friend too. She was there for my first breath and I will be there for her last, and we will be together for everything in between, because a mother is the best friend anyone could ever ask for.

chia đôi làm 2 đoạn nhé bạn 

LƯU Ý: ĐÂY LÀ BÀI VĂN TẢ MẸ BẰNG TIẾNG ANH , BẠN THAM KHẢO ĐƯỢC TÍ NÀO THÌ THAM.

My mother is the most important person in my life. She is an inspiration to everything I do. I would not call her a friend, but she is an extraordinary person. She has been in my life since I was born and she will always be in my life no matter what happens. She is the one who has suffered to bring me into this world. I have learnt to love her from the day I was born.

My mother was the first person to teach me to draw and walk, and she was with me when I took my first step ever! She has taught me to believe in people and not to have grudges against one another. She always encouraged me to go along when I was ready to give up. She makes sure that I was safe and happy throughout my childhood. It is the unconditional love that my mother feels that drives these feelings.

It is hard to describe the feeling that a mother has towards her children. Mothers give an awful lot of support to their children, whether it involves very visible support or simple background encouragement. Not only do mothers support their children, but they also often hold the whole family structure together. When all is well, a mother puts her children before anything else, including their own comfort and happiness. Describing a mother's love is virtually impossible. It is a feeling that can only truly be understood by those that experience it. Famous saying states that "God could not be everywhere and so he invented mothers"!

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