520 : 738 :: ? : 350
Explanation:
520 = 512 + 8 = 83 + 8 738 = 729 + 9 = 93 + 9 350 = 343 + 7 = 73 + 7 ? = 63 + 6 = 216 + 6 = 222
Hence, option (b).
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