Question

The number with the most significant zero is
0.00002510
2.5100000
0.02500001
250000001
2.501*10_7

Answer 1

250000001 is the answer.
it has six significant zeroes.
A zero is significant if it is after both a decimal and a number. it is also significant if it is between two numbers.
the final choice
2.501*10⁷ is 25010000 has only one significant zero.

Answer 2

The number having most significant zero is the number in which the zeors can be countable as a scientific basis !!

so 250000001 has the most significant zeros i.e 6 !!