Question

Ragul used 4 rings on the Abacus rod to make number.He used only units and terms place rods to make number,hence making the following number.How many number can he make using 6 rings. If h uses only tens and hundreds place ?
a) 10 b) 7 c) 6 d) 5

Answer 1

if he uses only tens and hundreds place -a)10

Answer 2

60,51,42,33,24,15,6 are the number that can be formed in an abacus by using 6rings...therefore the number of numbers that can be formed is 7.