Solution:

3! + 15 + 9 = 30

Explanation:
3! = 3 * 2 * 1 = 6
6 + 15 + 9 = 30

Solution:

A cigar stuck in the wall

Solution:

Costa

Explanation:
c + 1 characters-> d
o + 2 characters-> q
s + 3 characters-> v
t + 4 characters-> x
a + 5 characters-> f

=> dqvxf = costa

Solution:

It can be done in 8 moves as shown in the animated image below.

Solution:

41312432

Solution:

Align the toothpicks to form TEN. Use one toothpick for each of the lines.

Solution:

2 minutes (duration between 9:59 and 10:01)

Solution:

99 matches.

The number of matches will always sum up to one less than the number of players in a knock out tournament. You may calculate it in any manner. Thus 99 matches were played.

Solution:

1/3

Explanation
Assuming T1 is the Toy for brother1, T2 is the toy for brother2 and T3 is the toy for brother3.

Following are the possible cases for toys distribution:

Boy1 Boy2 Boy3
T1 T2 T3
T1 T3 T2
T2 T1 T3
T2 T3 T1 .... (A)
T3 T1 T2 .... (B)
T3 T2 T1

In both steps (A) & (B), no one gets the correct toy.
Therefore probability that none brother can get the own toy is 2/6 = 1/3

Solution:

3/7

Explanation:
If a 31day month starts on a Friday, Saturday or Sunday it will have five Sunday, if not it will have 4 Sunday.

Solution:

The women is a of short stature. She can't reach the upper elevator buttons, but can push is with his umbrella.