# Name the toughest subject a college student can study.

1 | addition^{} | |
---|---|---|

1 | subtraction^{} | |

1 | numbers^{} | |

1 | multiplication^{} | |

1 | mathematics^{} | |

1 | long division^{} | |

1 | geometry^{} | |

1 | fractions^{} | |

1 | figures^{} | |

1 | algebra^{} | |

1 | trigonometry^{} | |

1 | calculus^{} | |

1 | division^{} | |

1 | equations^{} | |

2 | quantum physics^{} | |

2 | physics^{} | |

2 | astro physics^{} | |

3 | science^{} | |

3 | political science^{} | |

4 | psychology^{} | |

5 | sociology^{} | |

6 | engineering^{} |