Solution:

Equally Important.

Solution:

42857

Let the number be x
10x +1 = 3(100,000 + x)
=> x = 42857.

Solution:

He can choose to die of old age

Solution:

A Corn

Solution:

Mountain (Mount 10).

Solution:

The mules is moving in circular path and hence outside legs travels more distance than inner legs.

Solution:

Tanu was blind and she was reading book by Braille.

Solution:

12 years

Solution:

720

(0!+0!+0!+0!+0!+0!)!
=(1+1+1+1+1+1)!
=(5)!
=6! is 6*5*4*3*2*1=720

Solution:

6 Feet Under

Solution:

5

23-2=21
21+3=24
24-5=19
19+7=26
26-11=15
15+13=28
28-17=11
11+19=30
30-23=7
7+29=36
36-31=5


(2,3,5,7,11,13,17,19,23,29,31,37,41,43... are Prime Numbers)

Solution:

Old password : altered

New Password : distinct

Solution:

Its a famous paradox riddle , which always contradicts itself.

Solution:

only 6

Solution:

4100

some people might guess 5000

Solution:

Steps
1. Monica go from side A to B for approx 59 minutes
2. Lisa then move back to side A for 2 minutes to fool guard. Now guard will think she is coming to side A.
3. then she again move toward B :-)

Solution:

7 * ((3 / 7) + 3) = 24

Solution:

Steps:
1) Light fire on first bar from both the ends and second bar from one end.

2) After 30 seconds(when first bar gets completely burned out) , burn the second bar from second end as well.

3) When second run completely gets burned , you know its 45 seconds.

Solution:

36 meters.

100/v1 = 80/v2
100/v2 = 80/v3

20+(20/v2)*v3=20+16 = 36

Solution:

Because fish has its own scales.