Capgemini
Company
Logical Reasoning
General Mental Ability
. There are 6561 balls out of them 1 is heavy. Find the min. no. of times the balls have to be weighed for finding out the heavy ball.
Read Solution (Total 3)
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- 6561 if u notice is 3^8...n can be divided by 3(prime factor) only...we keep on dividing it into sets of 3 and in 1 weighing itself you can determine which set is heavy. Divide that set into further 3 lots...keep doing that..
6561
2187 2187 2187 1st weighing
729 729 729
243 243 243
81 81 81
27 27 27
9 9 9
3 3 3
1 1 1
Answer is 8 attempts - 9 years agoHelpfull: Yes(7) No(0)
- 8.
Make sets of 3 and weigh the sets.
3^8 =6561. - 9 years agoHelpfull: Yes(3) No(0)
- how pla explain cannot understand
- 9 years agoHelpfull: Yes(2) No(0)
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