INMO - 1995

Probability Level pending

The number of 3 3 - element subsets { a , b , c {a, b, c} } of { 1 , 2 , 3 , … , 63 {1, 2, 3, \dots, 63} }, with a + b + c < 95 a + b + c < 95 is [ ] the number of those with a + b + c ≥ 95 a + b + c \geq 95 .

What will replace [ ]?

> None of These = <

Ameya Salankar by Ameya Salankar , 23, India

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