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1

Area of dots on a grid

2

Simplify Factorial

3

Poly-Remainder 

4

Perpendicular line and perpendicular

bisector of a line  segment

5

Supplementary and complementary

Angles equations

6

Fractions expansions , Find A±B

7

water tank of different shapes 

Unit Conversions

8

Simple matrices operations

9

Operations with symbols Ω Δ Φ

10

frequency, period and range

of sin-cos functions