Question discussion

What should come in place of the question mark (?) in the following questions?

113663Medium 2 replies 1,405 views
19
What should come in place of the question mark (?) in the following questions?
$$90780\div\sqrt{?}=85\times12$$
  • A89
  • B7921
  • C7569
  • D87
Answer not set
0
CCommunity
Solution
Expression : $90780\div\sqrt{?}=85\times12$
=> $\frac{90780}{\sqrt{?}} = 85 \times 12$
=> $\sqrt{?} = \frac{90780}{85 \times 12} = 89$
=> $? = 89^2 = 7921$
0
CCommunity
Solution
Expression : $90780\div\sqrt{?}=85\times12$
=> $\frac{90780}{\sqrt{?}} = 85 \times 12$
=> $\sqrt{?} = \frac{90780}{85 \times 12} = 89$
=> $? = 89^2 = 7921$