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Numerals and Other Signs
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of the right curve transforms into a straight vertical and shows different forms which look like nta and found in Tipperāh grant (Table N2). A peculiar sign occurs in Chandeśvara plates (Table N4). The ya like letter appears in the Mangarāon (Table N) and Dadhimatī-mātā inscriptions (Table Ny). In Ahar (N23) and Dighwā-Dubaulī plates (N24) it is represented by lri like letter-form. From the 10th century decimal system becomes the regular feature where numeral one comes to the left of zero. Sign for Twenty
The numeral 20 retains old tha like letter form in Tipperāh (Table N2), Banskherā (N7) and Madhuban copper-plates (Ne). Sign for Forty
Pta like letter-form is the shape of numeral 40 in the Guhil inscriptions (Table N12). Sign for Fifty
In all developmental stages 50 is indicated by a curve open to right as shown in Table N24 (Dighwā-Dubaulī plate). Sign for Sixty
An angle with its apex downwards is the shape of 60 in earlier period which developed in due course and takes pu like letter form in the BodhGayā inscription (Table 15). Sign for Seventy
In Kushāna period a cross-bar or pna like letter from is employed for 70 which developed into rika like mark in later period as shown in Table N17 (Pettasar grant). Sign for Eighty
The numeral 80 is denoted by a circle with a full breadth vertical line in the middle in earlier period. In Dadhimatī-mātā inscription flat line with two upright triangle is the shape of it. In the Bengāl Asiatic Society's plate (Table N24) an upward open curved with inner bent extremities is the shape of the numeral.
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