Answer Posted / thomas kotzyba

1. Determine the set of three with the ball that weights less: Pick 6 balls - weight 3 against 3 - if equal the searched for is within the remaining 3 balls.

2. You are left with a set of three balls, one of which weights less. Pick 2 balls - weight them against each other - if equal the searched for is the one you did not pick.

Ans=2

if the length of the cycloid is 4 times the diameter of a rotating circle, then the area under the arch traced out by that cycloid is how many times the area of therotating circle?

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