Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

O_er_t_o_

Complete the missing letters of the given word.

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Rearrange the letters in "new door" to make one word.

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

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Can you name four days which start with the letter 'T'?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?