1.

The following steps are involved in finding the value of `10 (1)/(3) xx 9(2)/(3)` by using an appropriate indentity . Arrange them in sequential order . (A) `(10)^(2) - ((1)/(3))^(2) = 100 - (1)/(9)` (B) `10(1)/(3) xx 9(2)/(3) = (10 + (1)/(3)) (10 - (1)/(3))` (C) `(10 + (1)/(3)) (10 - (1)/(3)) = (10)^(2) - ((1)/(3))^(2) [because (a + b) (a -b) = (a^(2) - b^(2))]` (D) `100 - (1)/(9) = 99 + 1 - (1)/(9) = 99(8)/(9)`A. BCDAB. BACDC. ACBDD. BCAD

Answer» Correct Answer - D
(B) , (C), (A) and (D) is the required sequential order .
Hence , the correct option is (d) .


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