Lesson eLearning

Calculate the number of years between the formation of the Indian National Congress (1885) and the launch of the Non‑Cooperation Movement (1920).

medium 2 marks Class 10 · History · Nationalism in India
Answer
35 years

The correct answer is 35 years — State the result as the number of years separating the two events.

Step-by-step solution

  1. Write down the two years: formation of INC = 1885, launch of Non‑Cooperation Movement = 1920.
  2. Subtract the earlier year from the later year: 1920 − 1885.
  3. Perform the subtraction: 1920 − 1885 = 35.
  4. State the result as the number of years separating the two events.
Common mistake: Subtracting the years incorrectly (e.g., 1920 – 1885 = 34) by forgetting to include both end years.

Concept tested: Timeline calculation

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