Elementary school questions. Sweat. The question of the second grade of elementary school, sweat it.

It's a reasoning question.

From the diagram, we can know that A, B, and C each have a difference of 2 apples. Therefore, we know that the number of apples received by one of A, B, and C is not less than singular, so the number of apples received by A, B, and C is singular.

And so on: 7 9 11 = 693 (because the product of their own apples is not equal to 3315.) So the answer doesn't fit the topic)

9 11 13 = 1287 (because, the product of their own apples is not equal to 3315.) So the answer doesn't fit the topic)

11 13 15 = 2145 (because, the product of their own apples is not equal to 3315.) So the answer doesn't fit the topic)

13 15 17 = 3315 (because, in line with the title, the last column is 13 15 17.) ）

The column formula is: 13 15 17 = 3315

Split 3315 into 3*5*13*17, and combine it according to the title, 13*15*17. Hope.

3315=3*5*13*17...Decompose prime factors.

So each of the three got one.

That is, the total number is 13 + 15 + 17 = 45.

Decompose prime factors.

The three are one.

There are 13 + 15 + 17 = 45 (pcs).

This is the topic of cultivating children's imagination.

The answer is generally uncertain.

The ears of the little fat pig are like leaves.

The feet of the ducklings are like maple leaves.

The dark circles under the panda's eyes are like ink stains.

The horns of the sika deer resemble tree branches.

Goldfish tails like tulle.

The red plum has 5 petals.

At 630 meters from the starting point, the mill is turned into a bend, and the 1190 meters are quietly divided into two sections, and then the greatest common factor of these two sections is found, so that you can know how many trees need to be planted. The results of the calculations are as follows:

1190－630＝560m

The greatest common factor is 70m

1190 70+1 18 trees*2 36 trees.

Red Ball + Green Ball + 4 5 Purple Balls = (160-120) * 4 = 1601 5 Purple Balls are 0, and Purple Balls are 0.

Then Red Ball + Green Ball = 160

The second condition: 1 5 red ball + 1 4 green ball = 160-116 = 444 5 red ball + green ball = 44 * 4 = 176

This question is incorrect.

There is an error in this question: there is red. Green. There are 160 purple balls, and 1 4 of the red balls are takenPurple Ball 1 5With 1 4 of the green ball, it is impossible to have 120 balls left.

It should be red. Green. There are 160 purple balls, and 1 4 of the red balls are takenPurple Ball's 1 41 4 of the green ball, 120 balls remaining.

There is red. Green. 160 purple balls, if you take 1 of the red balls, 4Purple Ball's 1 41 4 of the green ball, then, there are 120 balls left.

But now the purple ball has only taken 1 5, and the rest should be greater than 120.

Therefore, the number in the question is wrong.

There is an error in the question, if you take the 1 of the red ball 4Purple Ball's 1 41 4 of the green ball, then 160-160 1 4 = 120, and you have 1 4 of the red ball

Purple Ball 1 5The 1 4 of the green ball has 120 balls left, so the question is wrong.

Solve equation problems.

Set the red, purple, and green balls as x, y, and z, respectively

x+y+z=160

1 4*x+1 5*y+1 4*z=160-1201 5*x+1 3*y+1 4*z=160-116 The solution yields x=20, y=100, z=40

Time taken by the turtle: 60*5400 4000=81 minutes. The speed of the rabbit is converted to meters and minutes, 1 + 15 = 16 minutes, gone; 2 + 15 = 17 minutes, walked meters; 3+15=18 minutes, 1250 meters; 4+15=19 minutes, gone; 3 minutes, walked 1250.

The rabbit walked the meter in 73 minutes. 73 less than 81 minutes.

For the tortoise, divide the distance by the speed to get 81 minutes, use the same method to find the rabbit without rest, the time is minutes, play for four fifteen minutes in the middle, the total time is minutes, and then find the difference to the result, which is what you want.