Question

Find the missing term in the following figure pattern: - Figure 1: Outer numbers 169, 9, 36, 64; Center number 6. - Figure 2: Outer numbers 36, 16, 49, 9; Center number 4. - Figure 3: Outer numbers 121, 81, 100, 25; Center number ?.

Accepted Answer

D. Pattern: Take square root of all 4 outer numbers, sum them up, and divide by 5. Figure 1: $\sqrt{169} + \sqrt{9} + \sqrt{36} + \sqrt{64} = 13 + 3 + 6 + 8 = 30$. $30 / 5 = 6$. Figure 2: $\sqrt{36} + \sqrt{16} + \sqrt{49} + \sqrt{9} = 6 + 4 + 7 + 3 = 20$. $20 / 5 = 4$. Figure 3: $\sqrt{121} + \sqrt{81} + \sqrt{100} + \sqrt{25} = 11 + 9 + 10 + 5 = 35$. $35 / 5 = 7$. Hence, Option D is correct.

Number Pattern in Cross Figure

Explanation

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