1.

Find the square of 145.1. 210252. 225253. 226254. 215255. 21775

Answer» Correct Answer - Option 1 : 21025

Concept used:

Calculation skills trick.

Calculation:

Following steps need to be followed:

  • Write the square of 5 i.e. 25 at the extreme right end.
  •   Now multiply the remaining number to its next number. i.e. (14 x 15) = 21
  •   Now write the result to the left side of the result obtained in step (1) i.e. 21025 145² = 21025


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