7 zero's are there in 1 core
There are 21 zero in 3 core. 1 core = 7 zero so 7x3=21.
A core need not have any zeros.
Not at all sure about core, but there are 7 zeros in 178379 crore.
Not sure about 19 core, but there are seven zeros in 19 crore.
zero
1 sub zero card
1
7
5,000 core
zero
100 of them.