Find out the missing number in the picture attached:

What occurs twice in a week, once in a year but never in a day?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

Solve the puzzle by telling what does below picture means.

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

what does this picture(rebus) riddle means ?