Solution:

17

Explanation :
The relationship holds for below formula :
pow(x,3) - pow(x,2) - 1
=> 9*9*9 - 9*9 - 1
=> 729 - 81 - 1
=> 647

Similarly,
17*17*17 - 17*17 - 1
=> 4913 - 289 - 1
=> 4623

Solution:

The solution is:
547809 + 087549 + 780954 = 1416312

Solution:

66

Explanation:
Each arm has 15 blocks and there are four arms ,
The center has 6 blocks.
Total : 15*4 + 6 = 66

Solution:

450

Explanation:
II - IV + IX = 200
=> VII = 200

VI + I - V = 100
=> II =100

II - VI + VII = 150
=> III = 150

Therefore,
VII + II + III = 200 + 100 + 150 = 450

Solution:

Mount Rushmore (4 men faces carved into Mount Rushmore)

Solution:

120 km

Solution:

GPUZZLES IS BEST PUZZLE SITE

Explanation:
Ascii value of 71 is: G
Ascii value of 80 is: P
Ascii value of 85 is: U
Ascii value of 90 is: Z
Ascii value of 90 is: Z
Ascii value of 76 is: L
Ascii value of 69 is: E
Ascii value of 83 is: S
Ascii value of 32 is:
Ascii value of 73 is: I
Ascii value of 83 is: S
Ascii value of 32 is:
Ascii value of 66 is: B
Ascii value of 69 is: E
Ascii value of 83 is: S
Ascii value of 84 is: T
Ascii value of 32 is:
Ascii value of 80 is: P
Ascii value of 85 is: U
Ascii value of 90 is: Z
Ascii value of 90 is: Z
Ascii value of 76 is: L
Ascii value of 69 is: E
Ascii value of 32 is:
Ascii value of 83 is: S
Ascii value of 73 is: I
Ascii value of 84 is: T
Ascii value of 69 is: E

Solution:

An Oven

Solution:

Fri, 19 Aug 1983 00:00:00 GMT

The time mentioned was in Unix timestamp.

Solution:

A bald Head

Explanation:
No one wants to be bald and if the person got bald then he doesn't want to lose his head.