Maths | RJ Board | Grade 10 | 2014

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(i) △ADC∼△PSR

(ii) CDRS=ABPQ

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Class-interval | 0−10 | 10−20 | 20−30 | 30−40 | 40−50 | 50−60 | Total |

Frequency | 5 | x | 20 | 15 | y | 5 | 60 |

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(i) a two digit number

(ii) a perfect square number

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Class-interval | 0−20 | 20−40 | 40−60 | 60−80 | 80−100 | Total |

Frequency | 17 | x | 32 | y | 19 | 120 |

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