Figure is a street map. How many ways are there to move from the top – left corner to the bottom-right corner, if one...

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Phong Gió

14 tháng 2 2020 - olm

Figure is a street map. How many ways are there to move from the top – left corner to the bottom-right corner, if one can only move rightwards/downwards

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Phong Gió

15 tháng 2 2020 - olm

Rotate an equilateral triangle inscribed in a circle 40 degrees clockwise and counterclockwise, as shown in the figure below. How many triangles are there in the figure?

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Phong Gió

15 tháng 2 2020 - olm

Fill in the circles with the numbers 1, 2, 3, 4, 5, 6 and 7. Each number can be used once without repetitions. The sum of the digits inside the circles at the four vertices of the square on the left is 15 and the sum of the digits inside the circles at the vertices of the regular pentagon on the right is 24. How many possible arrangements are there?

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Phong Gió

17 tháng 2 2020 - olm

An ant is clinging to one corner of a box in the shape of a cube. The ant wants to get to the most distant corner of the box by crawling only along the edges of the cube and without ever revisiting a place it has been. How many different paths can the ant take to the most distant corner?

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Phong Gió

15 tháng 2 2020 - olm

Point B,DB,D and JJ are midpoints of the sides of right triangle ACGACG . Points K,E,IK,E,I are midpoints of the sides of triangle JDGJDG, etc. If the dividing and shading process is done 100 times (the first three are shown) and AC=CG=6AC=CG=6, then the total area of the shaded triangles is nearest

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Chu Mi Mi

15 tháng 2 2020

Giải toán trên mạng - Giúp tôi giải toán - Hỏi đáp ... - Online Math

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Phong Gió

13 tháng 2 2020 - olm

ABCD,CEFGABCD,CEFG and DGMNDGMN are squares, with GG on CDCD and FF on MGMG. If AB=10cmAB=10cm and MN=6cmMN=6cm, what is the area of triangle AMEAME, in cm2cm2?