The sum of two positive numbers A and B is 198. Find the minimum
value of the product of A and B.
Gợi ý: Cho biết trước tổng của 2 số. Tích nhỏ nhất khi hai số đó xa nhau nhất.
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The sum of two positive numbers A and B is 96. Find the maximum value of the product of A and B.
Gợi ý: Cho biết trước tổng của 2 số. Tích lớn nhất khi hai số đó gần nhau nhất.
Find the smallest sum of two numbers if their product is 100?
Tìm Tổng nhỏ nhất của hai số mà tích của 2 số đó là 100?
the quotient of two numbers is 1 and their product 100
find the sum of two numbers
Call two numbersare looking as x and y.
We have: x:y=1 \(\Rightarrow\)x=y
And: xy=100
\(\Rightarrow\)x2=y2=100
\(\Rightarrow\)x=y=10
x+y=20.
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The product of positive numbers A and B is 448. A is 7 times of B. Find the value of A.
The product of two numbers A and B is 576. A is 4 times of B. Find the value of B.
1.Peter, Bob and Jack do a work. If they work in pairs: Peter and Bob can complete it in 12 hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours. Peter needs ........ hours to complete this work by himself.
2.The product of 2 natural numbers is 2015. Find the smallest possible sum of these two numbers?
Answer: The smallest possible sum of these numbers is ...............
The difference of two numbers is 15 and their sum is 83. Find the smaller number?
Sự khác biệt của hai số là 15 và tổng của chúng là 83. Tìm số nhỏ hơn?
Số nhỏ hơn là:
(83-15):2=34
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Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?
Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?
Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?
Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?
Câu 5...
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Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?
Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?
Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?
Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?
Câu 5 : Find A, if A is 3 less than the average of 48; 55; 29 and A. The value of A is…
Câu 6 : The sum of denominator and numerator of a fraction is 121 and the fraction is equal to 4/7. Find the denominator of the fraction?
Câu 7 : The sum of two numbers is equal to 77. If the first number is multiplied by 8 and the second by 6, the two product are equal. The larger of these numbers is…
Câu 8 : Which is the greatest 2 - digit number divisible by 2, 3 and 4?
Câu 9 : Calculate: (1 + 2/5) x 6/7.
Câu 10 : Give the number sequence: 1, 4, 7, 10, 13, … Find the 15th term of the number sequence.
câu 1:16 ; câu 2 : ai mà biết được
Let a, b and c be positive integers. The sum of 160 and the square of a is equal the sum of 5 and
the square of b. The sum of 320 and the square of a is equal to the sum of 5 and the square of b.
Find a.