10+10 and 11+11 can give you the same answer.

Explain how?

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?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

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?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Name a key which is hardest to turn.

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Do You See It?