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What approximate value should come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) (11.99)2 – (8.01)2 + (4.99)2 = ?

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What approximate value should come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)

(11.99)2 – (8.01)2 + (4.99)2 = ?


1). 150
2). 125
3). 100
4). 105


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Answered by on | Votes 0 |

(11.99)2 – (8.01)2 + (4.99)2 = ?

Here, 11.99 ≈ 12

8.01 ≈ 8

4.99 ≈ 5

Now, the given expression will become:

? ≈ (12)2 – (8)2 + (5)2

⇒ ? ≈ 144 – 64 + 25

⇒ ? ≈ 105

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