The centre of the third figure is empty. What digit should fit inside?

How far can you walk into the woods?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

I am sure no one can have two things for dinner. what are they?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?