A) 20 |
B) 10 |
C) 40 |
D) 30 |
D) 30 |
Fig. I
\( \sqrt{64} + \sqrt{36} + \sqrt{49} = 8 + 6 + 7 = 21 = middle number\)
In fig. II
\( \sqrt{121} + \sqrt{81} + \sqrt{100} = 11 + 9 + 10 = 30 = middle number\)