CRANIUM CHALLENGE JANUARY CHALLENGE New Math ?
2 + 3 = 8 , 3 + 7 = 27 , 4 + 5 = 32 , 5 + 8 = 60 , 6 + 7 = 72 , 7 + 8 =??
Solve it ?
Please send you answers to Thomas Selling via e-mail :
thomasselling @ me . com Correct responses will be recognized in the future issues of the New Hampshire Civil Engineer .
DECEMBER SOLUTION
Divide the 9 balls into 3 groups of 3 . Compare the weight of two of those groups . The heavier group should then be obvious , it will either tip the scales , or , if the scales stay balanced , then it is the group you didn ' t include . Now , choose 2 balls from this group and compare their weights , and using the same logic as before , the heavier ball will be obvious .
Correct Response Submitted By : Peter Tedder , P . E ., Pennichuck Water Works