Dhaka Higher Secondary 2011/1
Posted: Wed Jan 11, 2012 10:01 am
In a box there are 50 gold rings of 10 different sizes and 75 silver rings of 12
different sizes. The size of a gold ring might be the same as that of a silver ring.
What is the minimum number of rings one need to pick up to be sure of having at
least two rings different both in size and material?
এটার উত্তর কেন ৭৬টা না???
কারণ ৭৫টা তুললে তার ৭৫টাই রুপার হউয়া সম্ভব...
different sizes. The size of a gold ring might be the same as that of a silver ring.
What is the minimum number of rings one need to pick up to be sure of having at
least two rings different both in size and material?
এটার উত্তর কেন ৭৬টা না???
কারণ ৭৫টা তুললে তার ৭৫টাই রুপার হউয়া সম্ভব...