All of the digits are significant:
In 1000000 there is one significant figure.
1000000
1000000
7
3 in A+
In 1000000 there is one significant figure.
One significant figure.
1000000) has 1 significant figure and a least significant decimal of 6.
4 significant digits.
All digits are significant in this case. Any digit after a decimal point is a significant digit.
There are four of them
Three of them
1000000
1000000
7
Four
3 in A+