Instructions
What approximate value should come in place of question mark (?) in the following questions ?(You are not expected to calculate the exact value)
Solution
The problems can be solved more quickly by approximating as answer given in options are differing substantially.
We can approximate 56~55, 2.538~2.5.
Now, 55^2= 3025.
55^2 of 2.538 = 3025*2.5= 7562. 7960 is nearest option to this.
Hence, option D is correct.
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