Mathematics
Grade-8
Easy

Question

Which of the following is the difference between the squares of 21 and 22?

  1. 21
  2. 22
  3. 42
  4. 43

hintHint:

To find the solution for (22)2 - (21)2, we will simplify the expression and then solve for the final answer.

The correct answer is: 43


    GIVEN-
    Given numbers- 21 & 22
    TO FIND-
    Difference between the squares of the given numbers.
    SOLUTION-
       (22)2 - (21)2
    = 484 - 441
    = 43
    FINAL ANSWER-
    Option 'a' i.e. '43' is the correct answer to the given question.

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