Deficient number

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Related to Defective number: Abundant number
(Arith.) See under Abundant.

See also: Deficient

References in periodicals archive ?
The city has not seen drives for people using defective number plates, not using seatbelts etc.
Judge Mangan found Keane guilty of operating his car without a silencer fitted to his exhaust and having defective number plates.
According to the official figures, around 10,000 vehicles with fancy or defective number plates have been challaned and fined by the Delhi Police this year, in the first 20 days of January.