A marine biologist wanted to estimate the number of fish in a large lake. He threw a net and found 30 fish in the net. He marked all these fish and released them into the lake. The next morning he again threw the net and this time caught 40 fish, of which 2 were marked. The approximate number of fish in the lake is :(adsbygoogle = window.adsbygoogle || []).push({});

a)600

b)1200

c)68

d)800

e)120

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Probability problem (came in TIFR)

Loading...

Similar Threads - Probability problem came | Date |
---|---|

I A seemingly simple problem about probability | Jan 29, 2018 |

A Help with this problem of stationary distributions | Nov 7, 2017 |

I Definition of "equivalent" probability problems? | Jun 25, 2017 |

B Sweets in a bag probability problem | May 28, 2017 |

A Queueing Problem | May 9, 2017 |

**Physics Forums - The Fusion of Science and Community**