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Which of the following is a CORRECT statement?

Option 1 -

2.3056 + 10.138 – 7.4671 = 4.9765

Option 2 -

2.38 * 1.0 = 2.38

Option 3 -

8 . 0 5 3 . 1 = 2 . 5 9 ≈ 2 . 6

Option 4 -

(1.11 – 0.1) * 9.0 = 9.0

0 3 Views | Posted 3 weeks ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    3 weeks ago
    Correct Option - 3


    Detailed Solution:

    (1)      2.3056 -> 4 decimals

    10.138 -> 3 decimals

    -7.4671 -> 4 decimals

    _________________

    4.9765

    Answer should have 3 decimals.

    (2)  2.38 × 1.0 = 2.38 -> answer should have 2 significant digits

    (3)   8 . 0 5 3 . 1 = 2 . 5 9 ≈ 2 . 6  answer should have 2SD

    (4)  1.11 - 0.1 = 1.01 ≈  1.0 but is an intermediate step so we keep 1 digit extra. 1.01 × 9.0 = 9.09 ≈  9.1 -> both 1.01 and 9.0 have 2SD

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