Can you name some countries which do not have the alphabet 'A' in them?

What is the Surname of Barbie Doll?

What makes this number unique: 8,549,176,320?

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

O_er_t_o_

Complete the missing letters of the given word.

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Replace the question mark with the number below given a simple math problem.

I cannot talk, but I always reply when spoken to. What am I?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Why Aeroplane windows are round?