I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

O_er_t_o_

Complete the missing letters of the given word.

What came first, the chicken or the egg?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C