Solution:

39.

Solution:

Pages 19, 20, 23, 37, 38, & 42 will also be missing

Solution:

888 + 88 + 8 + 8 + 8 = 1000

Solution:

Sam : 2
Dean : 5
Castiel : 7

Age diff
7 - 2 = '5' is prime
7 - 5 = '2' is prime
5 - 2 = '3' is prime

Solution:

The brain teaser can be solved as shown in the image below.

Solution:

192 021

If you look at it as two-digit numbers you'll see:10 11 12 13 14 15 16 17 18 19 20 21

Solution:

At 01:05

Solution:

   9567
+ 1085
======
 10652

Solution:

TIF56

Explanation:
The password is formed as:
T (5th letter of Shruti)
I (5th letter of Arshika)
F(1st letter of Friday)
5(5th day of week)
6(Length of Friday)

Similarly, we will pick the 1st letter for Monday and 3rd letter for Wednesday.

Solution:

I am word "Introvert"

Solution:

What is the correct time ?