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Example 21 - Are f and g both onto, if gof is onto? - Examples

  1. Chapter 1 Class 12 Relation and Functions
  2. Serial order wise
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Example 21 Are f and g both necessarily onto, if gof is onto? Let f : {1, 2, 3, 4} → {1, 2, 3, 4} f is not onto g: {1, 2, 3, 4} → {1, 2, 3} g is onto gof is onto. But g & f are not necessarily onto

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