The Bird Watching Program Puzzle : Solution

What was the puzzle?

Let's find the total count of birds including yellow and non-yellow.

1. Each of them saw one bird that none of the others did. Individuals - Abel, Mabel, and Caleb. So, Birds = 3.

2. Each pair saw one bird that the third did not. Pairs - Abel-Mabel, Abel-Caleb, and Mabel-Caleb. So, Birds = 3.

3. And one bird was seen by all three. Abel-Mabel-Caleb. Birds = 1.

Therefore, total of 3 + 3 + 1 = 7 birds were seen.

It's clear that, everyone saw 4 birds viz. one individually, two when in pairs and 1 with all along. 

Since Caleb saw 4 yellow birds, Caleb must not had saw any of non-yellow birds.

The 4 yellow birds that Caleb saw must be as below.

1. The one Caleb saw individually. 

2. The one that Caleb saw in pair with Abel-Caleb.

3. The one that Caleb saw in pair with Mabel-Caleb. 

4. The one that Caleb saw with all.

Now, the two yellow birds that Abel saw must be the one that is pointed by (2) above and other pointed by (4) above.

That's make sure that the pair Abel-Mabel saw a non-yellow bird. 

Since Mabel saw 3 yellow birds, 2 of them are as pointed by (3) and (4) above, the third one must be the yellow bird that she saw alone. So far, we discovered there must be 5 yellow birds (4 seen by Caleb and one seen by Mabel individually) at least.

So, far we know Abel saw a yellow bird as in pair Abel-Caleb, one more yellow bird with all and a non-yellow bird as in pair Abel-Mabel. Hence, the fourth bird that Abel saw must be a non-yellow bird since as per data Abel saw only 2 yellow birds. 

Can You Break This Code?

Can you break this code?

Shift three. Caps lock one. Shift six.

Tab six. Tab nine. Tab seven.

Tab four. Tab three. Caps lock one. Caps lock three.

Tab five. Caps lock six. Tab eight. Caps lock two. Shift 10.

Know here what that code is!

"Can You Read This?"

Title is not the question; question is here!

The given code is -

Shift three. Caps lock one. Shift six.

Tab six. Tab nine. Tab seven.

Tab four. Tab three. Caps lock one. Caps lock three.

Tab five. Caps lock six. Tab eight. Caps lock two. Shift 10. 

If carefully observed the code, it represents keyboard like a grid/table.

Shift, Caps lock, Tab represents rows while the numbers associated with them represents a column. Together both represents a particular key on the keyboard. 

Shift three - C              Caps lock one - A               Shift six - N

Tab six - Y                    Tab nine - O                      Tab seven - U
 
Tab four - R     Tab three - E     Caps lock one - A    Caps lock three - D            

Tab five - T      Caps lock six - H   Tab eight - I        Caps lock two - S                   
Shift 10 - ?

So the code is CAN YOU READ THIS? 

250 Lbs Across The River?

Two boys weighing 50 pounds each and their older brother weighing 100 pounds wish to cross a river. Their boat will only hold 100 pounds.

How can they all cross the river in the boat?

Find here how they can! 

Source 

Taking 250 Lbs Across The River.

What was the challenge? 

1. First 2 boys of 50 pounds should cross the river.

2. One of them should bring back the boat at other end.

3. A boy with 100 pounds should carry himself across the river with boat.

4. Other boy of 50 pounds waiting across the river now should bring back the boat again.

5. Now both boys of 50 pounds now should cross the river.