How many different integers can be expressed as the sum of three distinct numbers from the set
{3, 8, 13, 18, 23, 28, 33, 38, 43, 48}?
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It is same as the number of ways of selecting three numbers from the set i.e 8C3=56 ways
It is same as the number of ways of selecting three numbers from the set i.e 8C3=56 ways
Minimum sum=3+8+13=24
Maximum sum=38+43+48=129
((129-24)/5)+1=21+1=22
Answer:22
(Or)
(10c3)-3=120-3=117
Answer:117