csat-suneung 2016 Q14

csat-suneung · South-Korea · csat__math-B 4 marks Combinations & Selection Selection with Arithmetic or Divisibility Conditions
For three integers $a , b , c$ satisfying $$1 \leq | a | \leq | b | \leq | c | \leq 5$$ what is the number of all ordered pairs $( a , b , c )$? [4 points]
(1) 360
(2) 320
(3) 280
(4) 240
(5) 200
For three integers $a , b , c$ satisfying
$$1 \leq | a | \leq | b | \leq | c | \leq 5$$
what is the number of all ordered pairs $( a , b , c )$? [4 points]\\
(1) 360\\
(2) 320\\
(3) 280\\
(4) 240\\
(5) 200