How many lays are used to produce Yellow-coloured fabrics?
Explanation:
Lay numbers 1, 3, 4, 6, 7, 8, 9, 11, 12, 15, 21, 24, 25 and 27 produce yellow coloured fabrics.
∴ Number of lays that produce yellow coloured fabrics = 14
Hence, option (d).
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