The sum of three continuous natural numbers is 21. The product of these three continuous natural numbers is______ ．

The sum of three continuous natural numbers is 21. The product of these three continuous natural numbers is______ ．

21 △ 3 = 7, 7 + 1 = 8, 7-1 = 6, then the three continuous natural numbers are 6, 7, 8; product: 6 × 7 × 8 = 336; so the answer is: 336

The product of four continuous natural numbers is equal to 3024. Find the sum of these four continuous natural numbers?

Let 4 continuous natural numbers be a, a + 1, a + 2 and a + 3
a(a+1)(a+2)(a+3)=3024
That is, (a ^ 2 + 3a) (a ^ 2 + 3A + 2) = 3024
Let t = a ^ 2 + 3a ①
Then t (T + 2) = 3024
The solution is t = 54 or T = - 56
Substituting t = 54 into (1)
The solution is a = 6 or a = - 9
That is to say, the four consecutive natural numbers are 6, 7, 8 and 9
The sum is 6 + 7 + 8 + 9 = 30

The product of two identical natural numbers is equal to the product of the two natural numbers. What is the natural number?

The product of two identical natural numbers is equal to the product of the two natural numbers. What is the natural number?
It should be "the sum of two identical natural numbers equals to the product of these two natural numbers. What's the natural number?" right?
Then there will be 0 and 2

All integers with absolute values less than 3.14 are______ ．

All integers with absolute values less than 3.14 are - 3, - 2, - 1, 0, 1, 2, 3

Integers with absolute values not greater than 3.14 have ()

Integers with absolute values not greater than 3.14 are (- 3, - 2, - 1,0,1,2,3)

What is the sum of all integers whose absolute value is not less than 2 but less than 5?

Not less than 2, that is, greater than or equal to 2, there are - 2, - 3, - 4,2,3,4. The sum is 0

The sum of all integers with absolute values not less than 3 and less than 5 is______ ．

All integers with absolute value not less than 3 and less than 5 have ± 3, ± 4, ∵ 3-3 + 4-4 = 0

Find the sum of all integers whose absolute value is not less than 2 but greater than 5

There's 3.4 between 2 and 5. In absolute terms, there's - 3, + 3, - 4, + 4
Is it right to give?

Integers with absolute value less than 2 have nonnegative integers with absolute value less than 3
There are also several - 1 and 1 / 2 △ 3 / 4 × (- 0.2) × 1 and 3 / 4 △ 1.4 × (- 3 / 5)
(- 13 and 1 / 3) × 1 / 5 + (- 6 and 2 / 3) × 1 / 5 + (+ 196 and 1 / 7) △ 5
If a + 1 = 0, then a = ()

Integers with absolute values less than 2 have
-1 1
Nonnegative integers with absolute values not greater than three have
0 1 2 3
-1 and 1 / 2 ／ 3 / 4 × (- 0.2) × 1 and 3 / 4 ／ 1.4 × (- 3 / 5)
=(-3/2)÷(-3/20)×7/4÷7/5×（-3/5)
=(-3/2)×(-20/3)×7/4×5/7×(-3/5)
=10×7/4×5/7×（-3/5)
=10×5/4×(-3/5)
=10×(-3/4)
=-15/2
=-7.5
(- 13 and 1 / 3) × 1 / 5 + (- 6 and 2 / 3) × 1 / 5 + (+ 196 and 1 / 7) △ 5
=-40/3×1/5+(-20/3)×1/5+28÷5
=-40/3×1/5+(-20/3)×1/5+28/5
=(-40/3 - 20/3)×1/5+28/5
=-20×1/5+28/5
=(-20+28)/5
=-48/5
If a + 1 = 0, then a = ()
│a+1│＝0
So: (a + 1) = 0 or - (a + 1) = 0
A = - 1 or a = - 1
So: a = - 1

All integers with absolute values greater than 6 and less than 9 have

7、8、-7、-8