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shyju k

· started a discussion

· 1 Months ago

waste of time (Question: 107230.0 )

dont waste time

Question:
Directions : What should come in place of the question mark (?) in the following question?


 (21.6)2 ÷ (-7.2)2 × ? = 15483.36 – 15276.09

Options:
A) 23.03
B) 22.3
C) 32.03
D) 32.3
E) None of these
Solution:

 \(\frac{21.6 ×21.6}{7.2× 7.2}\) × ? = 207.27

⇒ 9 × ? = 207.27

⇒ ? =  \(\frac{207.27}{9}\) = 23.03

Knowledge Expert

· commented

· 1 Months ago

Dear student
It's not about waste of time, you must practise these kind of Question, It will be helpfull for your exam.

Best wishes
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