During the period of 1947 to 1990, how many five-year plans were completed?

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Accepted Answer

Step-by-step explanation:

1. Five-Year Plans in India began after independence, the first starting in $1951$.
2. Count the completed five-year plans between 1947 and 1990 (inclusive):
   - 1st: $1951$–$1956$
   - 2nd: $1956$–$1961$
   - 3rd: $1961$–$1966$
   - 4th: $1969$–$1974$
   - 5th: $1974$–$1979$
   - 6th: $1980$–$1985$
   - 7th: $1985$–$1990$
3. Note that the periods $1966$–$1969$ and $1979$–$1980$ were covered by Annual Plans (not five-year plans), so they do not add to the five-year plan count.

Therefore the total number of five-year plans completed in that period is $7$.

FINAL_ANSWER: b

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