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Blue whales are the biggest animals in the world, measuring more than 30 meters long. In fact, they are even bigger than dinosaurs! Despite their massive size, whales live in small groups consists of usually two or three whales.

Contrary to their enormous size, blue whales are not dangerous to humans. They are known to be intelligent and gentle creatures. They have the ability to use sound to communicate with each other, making various vocalizations to talk. This unique communication method allows them to navigate and find food in the vast ocean.

Speaking of food, blue whales have a rather surprising diet. Despite their massive size, they only eat small creatures, such as krill and other tiny marine organisms. They are filter feeders, meaning they consume large amounts of water and filter out the small organisms through baleen plates in their mouths.

Blue whales are truly fascinating creatures. Despite their immense size, they are gentle giants that pose no threat to humans. Their ability to communicate using sound and their unique feeding habits make them even more attractive. It is no wonder that they continue to captivate the curiosity and awe of people around the world.

Blue whales are the biggest animals in the world. They are more than 30 meters long, making them even bigger than dinosaurs. Despite their massive size, blue whales live in small groups. Usually, there are only two or three whales in a group.

Contrary to their enormous size, blue whales are not dangerous to humans. They are gentle creatures and are known for their intelligence. Blue whales can use sound to communicate with each other, making them excellent at talking. Additionally, they have a unique feeding habit. Despite their size, blue whales only eat small creatures, such as krill and plankton.

In conclusion, blue whales are fascinating creatures. They are the largest animals on Earth, yet they live in small groups. Despite their size, they are gentle and intelligent. Blue whales use sound to communicate and only eat small creatures. Their presence in the ocean is a testament to the diversity and wonder of marine life.

Blue whales are the biggest animals in the world. They are more than 30 meters long, making them even bigger than dinosaurs. Despite their massive size, blue whales live in small groups. Usually, there are only two or three whales in a group.

Contrary to their enormous size, blue whales are not dangerous to humans. They are gentle creatures and are known for their intelligence. Blue whales can use sound to communicate with each other, making them excellent at talking. Additionally, they have a unique feeding habit. Despite their size, blue whales only eat small creatures, such as krill and plankton.

In conclusion, blue whales are fascinating creatures. They are the largest animals on Earth, yet they live in small groups. Despite their size, they are gentle and intelligent. Blue whales use sound to communicate and only eat small creatures. Their presence in the ocean is a testament to the diversity and wonder of marine life.

(3x-4)⁷=128=2⁷

=>3x-4=2

=>3x=2+4=6

=>x=6:3=2

Blue whales are the biggest animals in the world. They are more than 30 meters long, making them even bigger than dinosaurs. Despite their massive size, blue whales live in small groups. Usually, there are only two or three whales in a group.

Contrary to their enormous size, blue whales are not dangerous to humans. They are gentle creatures and are known for their intelligence. Blue whales can use sound to communicate with each other, making them excellent at talking. Additionally, they have a unique feeding habit. Despite their size, blue whales only eat small creatures, such as krill and plankton.

In conclusion, blue whales are fascinating creatures. They are the largest animals on Earth, yet they live in small groups. Despite their size, they are gentle and intelligent. Blue whales use sound to communicate and only eat small creatures. Their presence in the ocean is a testament to the diversity and wonder of marine life.

Để tính tổng S = 1 + 4 + 4^2 + ... + 4^6, ta có thể sử dụng công thức tổng của cấp số nhân:

S = (a * (r^n - 1)) / (r - 1)

Trong đó:
- a là số hạng đầu tiên của dãy (a = 1)
- r là công bội của dãy (r = 4)
- n là số lượng số hạng trong dãy (n = 6)

Áp dụng vào bài toán, ta có:

S = (1 * (4^6 - 1)) / (4 - 1)
= (4^6 - 1) / 3

Để chứng minh A = {(4^7 - 1) : 3}, ta cần chứng minh rằng S = (4^7 - 1) : 3.

Ta có:
(4^7 - 1) : 3 = (4^7 - 1) / 3

Để chứng minh hai biểu thức trên bằng nhau, ta sẽ chứng minh rằng (4^7 - 1) / 3 = (4^6 - 1) / 3.

Ta có:
(4^7 - 1) / 3 = (4^6 * 4 - 1) / 3
= (4^6 * 4 - 1 * 4^0) / 3
= (4^6 * 4 - 4^6) / 3
= 4^6 * (4 - 1) / 3
= (4^6 - 1) / 3

Vậy ta đã chứng minh được A = {(4^7 - 1) : 3}.

Blue whales are the biggest animals in the world. They are more than 30 meters long, making them even bigger than dinosaurs. Despite their massive size, blue whales live in small groups. Usually, there are only two or three whales in a group.

Contrary to their enormous size, blue whales are not dangerous to humans. They are gentle creatures and are known for their intelligence. Blue whales can use sound to communicate with each other, making them excellent at talking. Additionally, they have a unique feeding habit. Despite their size, blue whales only eat small creatures, such as krill and plankton.

In conclusion, blue whales are fascinating creatures. They are the largest animals on Earth, yet they live in small groups. Despite their size, they are gentle and intelligent. Blue whales use sound to communicate and only eat small creatures. Their presence in the ocean is a testament to the diversity and wonder of marine life.

Blue whales are the biggest animals in the world. They are more than 30 meters long, making them even bigger than dinosaurs. Despite their massive size, blue whales live in small groups. Usually, there are only two or three whales in a group.

Contrary to their enormous size, blue whales are not dangerous to humans. They are gentle creatures and are known for their intelligence. Blue whales can use sound to communicate with each other, making them excellent at talking. Additionally, they have a unique feeding habit. Despite their size, blue whales only eat small creatures, such as krill and plankton.

In conclusion, blue whales are fascinating creatures. They are the largest animals on Earth, yet they live in small groups. Despite their size, they are gentle and intelligent. Blue whales use sound to communicate and only eat small creatures. Their presence in the ocean is a testament to the diversity and wonder of marine life.

Blue whales are the biggest animals in the world. They are more than 30 meters long, making them even bigger than dinosaurs. Despite their massive size, blue whales live in small groups. Usually, there are only two or three whales in a group.

Contrary to their enormous size, blue whales are not dangerous to humans. They are gentle creatures and are known for their intelligence. Blue whales can use sound to communicate with each other, making them excellent at talking. Additionally, they have a unique feeding habit. Despite their size, blue whales only eat small creatures, such as krill and plankton.

In conclusion, blue whales are fascinating creatures. They are the largest animals on Earth, yet they live in small groups. Despite their size, they are gentle and intelligent. Blue whales use sound to communicate and only eat small creatures. Their presence in the ocean is a testament to the diversity and wonder of marine life.