150403TBR
Greatest Number of Mental Arithmetic (Addition) Problems Solved by a Minor (Male) in 30 Minutes
R.G.Naveen
3-Oct-2015
The Greatest Number of Mental Arithmetic (Addition) Problems Solved by a Minor (Male) in 30 Minutes counted to 1223 perfect answers out of 1270 arithmetic sums, was completed by R.G.Naveen, ARJWIN Abacus, Tiruppur District, Tamil Nadu, India on October 3, 2015.
262685TBR
262697TBR
262684TBR
262683TBR
262682TBR