There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Our product and our sum always give the same answer. Who are we?

Solve the mathematical equation in the picture below.

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?