Which one is correct cheque leaf or cheque leaves?

Which one is correct cheque leaf or cheque leaves? cheque leaf plural You can finish your cheque book with no problems with your old address Plural noun - isare cheque leaf means The word “Customer” shall include both singular and plural meanings, and shall be used for both Do not keep your cheque book and cards together ii Do not

cheque leaf filling FIG 3 shows a schematic diagram of a CIS unit, a MICR unit and a plural cheque leaves detecting unit disposed along a transportation unit in the cheque-