Question

A person counts 1coin/sec. .. how many year will it take to count 0.5 mole coins

Answer 1

Answer:

he count 1 coin in 1 sec

he will count $3.012 \times {10}^{23}$ in $3.012 \times {10}^{23}$ sec.

1 year = $3.15 \times {10}^{7}$ s

no. of years =${10}^{16}$years approx.