BEBRAS 2025 Grade 1-2 Round 2 Ext

The beaver visits a garden with the eight flowers shown. The beaver plans to pick every flower that has 8 petals or 2 leaves.



How many flowers will the beaver pick?

The beaver has a cord threaded with beads as shown.



Which bead order below is correct?

The beaver has these digit-shaped cards.



The beaver plans to arrange cards to make copies of the number 2024. What is the greatest number of copies that can be made?

The beaver has card A with four circular holes and card B with the pictures shown.



The beaver places A on top of B. Which picture below can be seen through the holes?

The beaver writes digits using dots as shown.



How many dots are needed to write 2024?

The beavers may choose 3 of 6 types of toppings for a pizza. Four beavers each make three ingredient requests, shown in the table.



Which choice of three toppings below satisfies the greatest number of their requests?

Nam has a transparent ring containing balls marked with pictures. When he shakes the ring, the balls can move as in this example.



Nam shakes the ring once more. Which order below can he obtain?

Mi must place one circle, one square, one triangle and one star in a 3 by 3 grid with these rules:
- No other shape may share the circle’s row.
- No other shape may share the square’s column.
- No other shape may share a diagonal with the star.

These examples illustrate the rules. No additional shape may be placed in a crossed-out square.



Mi has placed the circle, square and star as shown.



Which placement of the triangle below is allowed?

Beaver Victoria has a bracelet box with seven compartments. The pattern in each compartment matches the pattern of the bracelet it holds.



How many of the bracelets below have no matching compartment?

Tom works in a supermarket and has a balance scale and five weights: 1 gram, 3 grams, 9 grams, 27 grams and 81 grams. The picture shows how he weighs 11 grams of herbs.



Tom makes codes to help new staff. R means put the weight on the right pan, L means put it on the left pan, and O means do not use it. The code positions follow weights 1, 3, 9, 27, 81 grams in that order. For 11 grams, the code is RLLOO, as shown (Thảo mộc means herbs).



Which code weighs 34 grams of herbs?

The beaver wants to make the pyramid-shaped box shown.



Which piece of card below is needed?

Six columns contain 1, 6, 4, 2, 5 and 3 coins, respectively.



Pressing A, B, C, D or E compares the two columns immediately above that button:
- If the left column has fewer coins than the right, the columns swap.
- If the right column has fewer coins than the left, they stay in place.

What is the resulting arrangement after pressing A, B, C, D and E in that order?

Mai wants to draw the boat below following two rules:
- Do not lift the pen while drawing.
- Do not trace any line a second time.



How many starting positions allow Mai to complete the drawing under these rules?

A robot can say three-word sentences. The first word must come from Box 1, the middle word from Box 2 and the last word from Box 3. In the original picture, Hộp means Box.



Consider these four sentences:
- You Help Beaver
- Beaver Like Help
- I Love Love
- You Need Me

How many can the robot say?

Mi makes a grid of beaver pictures so that no row contains two identical pictures and no column contains two identical pictures. Some pictures have already been placed.



Which picture should Mi put at the question mark?