How many 3-digit even numbers can be formed from the digits 1.2.digits

1.	How many 3-digit even numbers can be formed from the digits 1.2.digits can be repeated?
Answer» Well 3 digit numbers formed by 1,2,3 can be repetitive or non repetitive type If repetition of any number is allowed: Then 3³ = 3x3x3 = 27 possibilities Suppose xyz is 3 digit number then For x we have 3 possibilities, for y 3 possibilities and for x again 3 possibilities if repetition is allowed so possible numbers = 3x3x3 = 27 Numbers are 111, 112, 113, 121, 122, 123, 131, 132, 133 211, 212, 213, 221, 222, 223, 231, 232, 233 311, 312, 313, 321, 322, 323, 331, 332, 333 Total = 27

How many 3-digit even numbers can be formed from the digits 1.2.digits can be repeated?

Answer»

Well 3 digit numbers formed by 1,2,3 can be repetitive or non repetitive type

If repetition of any number is allowed:

Then 3³ = 3x3x3 = 27 possibilities

Suppose xyz is 3 digit number then

For x we have 3 possibilities, for y 3 possibilities and for x again 3 possibilities if repetition is allowed so possible numbers = 3x3x3 = 27

Numbers are

111, 112, 113, 121, 122, 123, 131, 132, 133

211, 212, 213, 221, 222, 223, 231, 232, 233

311, 312, 313, 321, 322, 323, 331, 332, 333

Total = 27