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Sourav Sarkar

· started a discussion

· 1 Months ago

sir right answer is 250, because it is given (=). (Question: 103118.0 )

how can u divide it ? explain plz.

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

\(\sqrt{624.9995}\) + (4.9989)2 =? ÷ \(\cfrac{1}{4.9900865}\)

Options:
A) 6
B) 50
C) 10
D) 125
E) 15
Solution:
√624.9995 + (4.9989)2 =? ÷\(\frac{1}{4.9900865}\)

Taking approximate values.


⇒ √625 + (5)2 ≈ ? ÷ \(\frac{1}{5}\) 
⇒ 25 +25 ≈ ? × 5 
⇒ ? = \(\frac{50}{5}\) = 10

Knowledge Expert

· commented

· 1 Months ago

:)

Sourav Sarkar

· commented

· 1 Months ago

Thank u for d note :)

Knowledge Expert

· commented

· 1 Months ago

Why not to divide???........It is to divide....


√(624.9995) + (4.9989)^2 =? ÷ 4.9900865

Taking approximate values.

⇒ √(625) + (5)^2 = ? ÷ 1/5

⇒ 25 +25 = ? × 5

⇒ ? = 50/5 = 10



Note: if a ÷ a/b then a * b/a = ab/a = b
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