Qiang Qiang, Wei Wei and Liang Liang are three good friends. Their age is three consecutive natural numbers. The product of the three numbers is 504. Guess how old are they?

Qiang Qiang, Wei Wei and Liang Liang are three good friends. Their age is three consecutive natural numbers. The product of the three numbers is 504. Guess how old are they?

504=2×2×2×3×3×7 =7×(2×2×2)×(3×3) =7×8×9
A: seven, eight, nine

Qiang Qiang, Wei Wei and Liang Liang are three good friends. They are just one year older than each other (three consecutive natural numbers). Their ages are multiplied by 504. Guess & nbsp; how old are they?

504 = 2 × 2 × 2 × 3 × 3 × 7 = 7 × 8 × 9; age is just three consecutive natural numbers, so the three people's ages are 7 years old, 8 years old and 9 years old respectively

Qiang Qiang, Wei Wei and Liang Liang are three good friends. Their ages are three consecutive natural numbers. The product of the three numbers is 504. How old are they?

Seven, eight, nine

If the rank of two matrices is equal, the two matrices are equivalent
Another problem is that if a and B are symmetric matrices of order n, and the inertia indices of a and B are the same, then a and B are congruent,

If two matrices of the same type have the same rank, then the two matrices are equivalent. Another problem is that if a and B are symmetric matrices of order n, and the inertia index of a and B are the same, then a and B are identical. Right? If only a and B are told to be matrices of order n, then is it right? First, a

What is the law of having a series of numbers - 3,6, - 12,24, - 48,96
What's the k-th bit in this column,

Rule: (- 1) ^ n × 3 × 2 ^ (n-1) n = 1,2,3

Approximate numbers and significant numbers of mathematical problems
First column second column third column fourth column fifth column
The first line
The second line 16 14 12 10
The third line 18 20 22 24
The fourth column 32 30 28 26
Question: according to the above arrangement, which row and column should 2004 be in, and explain the reason!

There are four numbers in each row
So 2004 / 4 = 501
On line 501
Because the odd number line is from left to right, it is the fourth line in 501

Xiao Hong read the story book. On the first day, she read 50 pages. On the second day, she read a quarter of the whole book. On the second day, she read 20 more pages than on the first day. How many books are there

The next day, it looks like 45 × (1 + 20%) = 54 pages
The book has a total of 54 / 4 = 216 pages

Let m = 2A & # 178; + 2A + 1, n = (a + 1) & # 178;, then the size relation of M and N is?

A:
m-n=2a²+2a+1-(a+1)²=a²>=0
So: M > = n
Take the equal sign when a = 0

A passenger car and a freight car start from AB and run in opposite directions at the same time. When they meet, the distance ratio between the passenger car and the freight car is 5:3. After the meeting, the passenger car continues to move forward at the original speed, and the freight car immediately returns at the original speed. When the passenger car arrives at B, the freight car is 30 kilometers away from B. how many kilometers is the distance between AB and B?

30÷【3/（5+3）-3/（5+3）×3/5】
=30÷【3/8-9/40】
=30÷3/20
=200 km

Solve log2 (3x) = log2 (2x + 1)

3x=2x+1
x=1