15 : 66 : : 185 : ? (1) 824 (2) 644 (3) 604 (4) 814 (5) None of these
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Let the unknown number be 'x'.
15:66: :185:x
15/66=185/x
x=185×66/15
x=814
Hence unknown number=x=814.
15:66: :185:x
15/66=185/x
x=185×66/15
x=814
Hence unknown number=x=814.
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