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Negative Numbers and Integers — Maths STD 6 — Question

Maharashtra BoardEnglish MediumSTD 6MathsNegative Numbers and Integers2 Marks
Question
If $\Delta$ is an operation on integers such that for integers a and b, $\text{a }\Delta\text{ b}=\text{a}-\text{b}-(-5)$. Find the values of:
$2\ \Delta\ 5$
✓

Answer

$\because\text{a }\Delta\text{ b}= \text{a}-\text{b}-(-5)$
$\therefore2\ \Delta\ 5=2-5-(-5)$
$= 2-5 + 5$
$= 2$

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