₦airaland Forum

Brain Teaser:


Some birds were flying and met a bird on their way. The bird greeted them; hello hundred! They said we are not hundred, we need half of us plus you to make us hundred.

Q. How many birds were flying?

198

66

49

A mathematical Approach.. Let 'us' be equal to k.. Thus, (k/2)+k+1=100; k+2k+2=100; 3k=198; K=66.

Phantom2:
198

Could you explain the reason for your answer?

Aooux:
49

Could you help with an explanation?

Basildvalour:
Could you explain the reason for your answer?

The correct answer is 66
1/2(x)+x+1=100
x+2x+2=200
3x = 200-2
3x = 198
X =198/3
X = 66
Hence its 66 birds flying not 198 birds flying

To explain further logically, half of 66 is 33 plus the 1 is 34. 66+34=100
what do I win

Phantom2:
0.5 × X birds + 1 = 100 X = (100 - 1) × 2 X = 99 × 2 X = 198
what do I win

Not logical to me

Basildvalour:
Not logical to me

I no kon know that one oo but I know say I correct

The correct answer is 66
1/2(x)+x+1=100
x+2x+2=200
3x = 200-2
3x = 198
X =198/3
X = 66
Hence its 66 birds flying not 198 birds flying

To explain further logically, half of 66 is 33 plus the 1 is 34. 66+34=100

Phantom2:
I no kon know that one oo but I know say I correct

The correct answer is 66
1/2(x)+x+1=100
x+2x+2=200
3x = 200-2
3x = 198
X =198/3
X = 66
Hence its 66 birds flying not 198 birds flying

To explain further logically, half of 66 is 33 plus the 1 is 34. 66+34=100

And what happens to that one they were talking to

Answer is 198

Half of 198 = 99
Plus the one bird. 99+1= 100


198 birds were flying

Basildvalour:
And what happens to that one they were talking to

I don confuse finish sef

Let me lend my voice to this logic .

Logically , the right answer to this should be
- I don't know
- They all left
- None
- I couldn't count

Do you know why? The question says the birds were flying .
Would birds flying wait for you to count them .
Think about it