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  1. A boy found the answer for the question “subtract the sum of
    1
      and 
    1
    45
    from unity and express the answer in decimals” as 0.45. The percentage of error in his answer was
    1. 100
      %
      11
    2. 50%
    3. 10%
    4. 200
      %
      11
Correct Option: D

According to question ,

Correct answer = 1 –
1
+
1
45

Correct answer = 1 –
5 + 4
20

Correct answer = 1 –
9
=
11
2020

Incorrect answer = 0.45 =
45
100

Incorrect answer =
9
20

Error =
11
-
9
2020

Error =
2
=
1
2010

Percentage error =
1
× 100
10
11
20

Percentage error =
1
×
20
× 100
1011

Percentage error =
200
%
11



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