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ở đây chỉ hỏi đáp toán,đố vui chứ ko cs hỏi tiếng anh ở đây !!!!!!!!
1.Given the quadrilateral ABCD with two diagonals perpendicular and AB = 8cm, BC = 7cm, AD = 4cm. Evaluate CD.
2.Given three consecutive even natural numbers, which have the product of last two numbers is 80 greater than the product of first two numbers.
Find the largest number.
Answer: The largest number is
Given three consecutive even natural numbers, which have the product of last two numbers is 80 greater than the product of first two numbers.
Find the largest number.
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a) find two consecutive even numbers the difference of their square is 156
b) find two consecutive odd numbers, given the difference of their cubes is 6938
a) find two consecutive even numbers the difference of their square is 156
b) find two consecutive odd numbers, given the difference of their cubes is 6938
The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Toán tiếng Anh: The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Answer: {}.
Suppose n is a positive integer and 3 arbitrary numbers are choosen from the set {1, 2, 3, . . . , 3n+ 1} with their sum equal to 3n + 1. What is the largest possible product of those 3 numbers?
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in a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is
Find the number of 3-digit positive numbers that have product of digits equals to 21.