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- Integers
- Rational Numbers
- Fractions (Including Problems)
- Decimal Fractions (Decimals)
- Exponents (including Laws of Exponents)
- Ratio and Proportion (Including Sharing in a Ratio)
- Unitary Method (including Time and Work)
- Percent and Percentage
- Profit, Loss and Discount
- Simple Interest
- Fundamental Concepts (Including Fundamental Operations)
- Simple Linear Equations (Including Word Problems)
- Set Concepts (Some Simple Divisions by Vedic Method)
- Lines and Angles (Including Construction of angles)
- Triangles
- Pythagoras Theorem
- Symmetry (Including Reflection and Rotation)
- Recognition of Solids (Representing 3-D in 2-D)
- Congruency: Congruent Triangles
- Mensuration
- Data Handling
- Probability

Exercises in Chapter 21 data handling Grade 7

Questions in Exercise 21(A)

Questions in Exercise 21(B)

Q16) The rainfall (in mm) in a city on 7 days of a certain week is recorded as follows

Day | Rainfall (in mm) |
---|---|

Mon | 0.5 |

Tue | 2.7 |

Wed | 2.6 |

Thus | 0.5 |

Fri | 2 |

Sat | 5.8 |

Sun | 1.5 |

Q22)Find the mean and the mode for the following data:

Term | Frequency |
---|---|

18 | 3 |

22 | 5 |

26 | 10 |

30 | 2 |

34 | 8 |

38 | 2 |

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