**A.1257. ****Place a set of parentheses in each of the
following equalities so that they are true:**

**a) 30-12:3+2×2=10**

**b) 30-12:3+2×2=18**

**c) 30-12:3+2×2=56**

**A.1258. Yuria put the following diagram on the board and asked her classmates how many quadrilaterals they see on the picture. How many do you see?**

**A.1259.**** The following masks are in a logical order. Which numbered
mask goes in the place of the question mark?**

**A.1260.**** Marlon asked the following question from his classmates: I
made this square using 12 pieces of matches. Using all 12 pieces of matches,
create**

**a) 2**

**b) 3**

**c) 4 squares on the table.**

**A.1261.**** If you fold the following grids, you can make a cube out of each
of them. The sum of the numbers on the opposite sides of some of the cubes is
divisible by 5. Find those cubes and those sums.**

**A.1262.**** How many 2-digit numbers have different even digits?**

**A.1263.**** In the following diagram you can see 3 balances. Based on
the first 3 measurements, how many pieces of cherries can balance an apple?**

**A.1264. In how many 4-digit numbers is the sum of the digits 4?**

**Please send your solutions here.**

The **Sharma Kamala Educational Trust** is sponsoring the participation of students from India. So, if you are **a student living in India**, please, send your solutions to: **Group A from India**