Alana11 Alana11
  • 21-09-2015
  • Mathematics
contestada

How many 4 digit palindromes contain both the digits 1 and 2

Respuesta :

AL2006
AL2006 AL2006
  • 21-09-2015

What a clever sneaky little problem !

There can only be two of them:    1221  and  2112 .

Answer Link

Otras preguntas

How many pairs of whole numbers have a sum of 110
Round to the place of the underlined digit 423,906583,342
Find two consecutive even integers such that the sum of the smaller and 5 times the larger is 202.
there are 34 people in a restaurant. four groups of 3 people leave and then 5 groups of 2 arrive. evaluate the expression 34 - 4 * 3 + 5 * 2 to determine how ma
what technological advances made possible the age of exploration
Explain how to write 50,000 using exponents
the 24 students in Mr Lee's class will rent vans to go on a field trip. 6 students and 1 adult will ride in each van. how many vans are needed?
The sum of two consecutive whole numbers is 57. What are the two numbers? Let n represent the first number. Then n+1 is the next consecutive whole number.
I know what area means in math but does anyone know the right definition?
Find the discount if a $69.99 item is on sale for $39.99.