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2511.3. Difference

Given arithmetic progression. It is known that one of the elements is incorrect. Determine, what is difference in this progression, which is the wrong element and corrects it!

Write the correct answer!

What is the string difference?
Which letter corresponds to strings incorrect member?
What number must be in the wrong values?
Numerical chain

Solve tasks to find hidden Geo point coordinates

  1. Geometry: Line segment ratio.
  2. Geometry: Triangle, parallelogram, rhombus area formulas, through narrow angle sine value.
  3. Geometry: Prism, pyramid, cylinder, cone height, basis. Cylinder and cone generatrix.
  4. Algebra: Variation, combination
  5. Algebra: Equation with two unknowns (either 1 or 2 degree)
  6. Geometry: Fixture surface area, surface layout, figure volume.
  7. Algebra: Difference
  8. Physics: Electrical circuit characteristics and Ohms law in circuit.
  9. Chemistry: Substance transformation. Chemical reaction types.
  10. Algebra: Combinatorics