Discussion

Explanation:

Given, 312×332×352×372×392×311= 27x

312+32+52+72+92+11= 27x

31+3+5+7+9+112 = (33)x

⇒ 336/2 = 33x

⇒ 318 = 33x

⇒ 3x = 18

⇒ x = 6

Hence, option (a).

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