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Relation — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSRelation3 Marks
Question
If $\text{a}\in[-1,2,3,4]$ and $\text{b}\in [0, 3, 6],$ write the set of all ordered pairs (a, b) such that a + b= 5.
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Answer

We have, a + b = 5 ⇒ a = 5 - b $\therefore$ b = 0 ⇒ a = 5 - 0 = 5, b = 3 ⇒ a = 5 - 3 = 2, b = 6 ⇒ a = 5 - 6 = -1 Hence, the required set of ordered pairs (a, b) is {(-1, 6), (2, 3), (5, 0)}

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