हल-क्षेत्र \(x\geq 0\), \(y\geq 0\), \(x+y\leq 4\) में पूर्णांक निर्देशांक वाले कितने बिंदु हैं?
How many points with integer coordinates are in the region \(x\geq 0\), \(y\geq 0\), \(x+y\leq 4\)?
Explanation opens after your attempt
B. (15)
Concept
For (x=0) to (4), the numbers of possible (y)-values are (5,4,3,2,1). The total is (15) integer points.
Why this answer is correct
The correct answer is B. (15). For (x=0) to (4), the numbers of possible (y)-values are (5,4,3,2,1). The total is (15) integer points.
Exam Tip
(x=0) से (4) तक क्रमशः (5,4,3,2,1) मान मिलते हैं। कुल (15) पूर्णांक बिंदु हैं।
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