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Problem
Problem
Number of integral solutions of
a
+
b
+
c
=
0
a + b + c = 0
a
+
b
+
c
=
0
,
a
≥
−
5
a \ge -5
a
≥
−
5
,
b
≥
−
5
b \ge -5
b
≥
−
5
and
c
≥
−
5
c \ge -5
c
≥
−
5
, is a. 272 b. 136 c. 240 d. 120
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