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Solution

Correct Option: 3

Pattern: square of first ×\times square of second.

Fig 2: 92×62=81×36=29169^2\times 6^2=81\times 36=2916.

Fig 3: 102×72=100×49=490010^2\times 7^2=100\times 49=4900.

Fig 1: 82×52=64×25=16008^2\times 5^2=64\times 25=1600.

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