Kevalaih Saptakam Gunyat:
For 7 the Multiplicand is 143
Kevalaih Saptakam Gunyat is the corollary to
Paraavartya Yojayet, the fourth
sutra of
Vedic mathematics.
This sutra converts
fractions in which the
denominator is 7 to a
decimal. It is used in conjunction with
Ekanyunena Purvena. This will not arrive at every possible decimal point in every case.
Example: convert 1/7 to a decimal
We multiply the
multiplicand (143) by 999 using
Ekanyunena Purvena. We use 999 because it has the same number of digits as our multiplicand and consists only of nines
143 x 999 =
142857
Multiply that number by the
numerator: 1 x 142857 = 142857
Place a decimal point at the beginning: 0.142857
Thus, 1/7 = 0.142857
Example: convert 2/7 to a decimal
We multiply the
multiplicand (143) by 999 using
Ekanyunena Purvena.
143 x 999 =
142857
Multiply that number by the
numerator: 2 x 142857 = 285714
Place a decimal point at the beginning: 0.285714
Thus, 2/7 = 0.285714
RESOURCES:
Vedic Mathematics by Sri Bharati Krisna Tirthaji
http://www.vedamu.org/Mathematics/course.asp
http://www.sanalnair.org/articles/vedmath/intro.htm
http://www.vedicganita.org/ganitsutras.htm
http://hinduism.about.com/library/weekly/aa062901a.htm
http://www.vedicmaths.org/
http://www.hinduism.co.za/vedic.htm
Mathemagics by Arthur Benjamin and Michael B. Shermer
http://en.wikipedia.org/wiki/Vedic_math
http://www.tifr.res.in/~vahia/dani-vmsm.pdf
http://www.sacw.net/DC/CommunalismCollection/ArticlesArchive/NoVedic.html