Abacus-Finger Abacus-How and When we have to apply combination friend formula+8=+10-5+3- ABC Tube TV

Abacus-Finger Abacus-How and When we have to apply combination friend formula+7=+10-5+2- ABC Tube TV
#abacus
#fingermath
#fingerabacus
#abctubetv
#abacusfrombasics
#smallfriend
#biggboss
#combination
#friends



Hi friends, in this video we will learn what the combination formula is in an abacus and how and when we apply the combination formula while we do calculations with a finger abacus.

for more video you can visit
finger abacus zero to hero playlist : https://www.youtube.com/playlist?list=PLZ67c1-XfKx578GRFv4pjW1h6VcCZ1l_n
and finger abacus playlist : https://www.youtube.com/playlist?list=PLZ67c1-XfKx44ts2ogMbst4vsnguaRzRr