1.Find the numbers greater than 23000 that can be formed from the digits 1,2,3,4,5,6 without repeating any digit.

2.how many 6 digit numbers can be formed without repeatig any digit from the digits 0,1,2,3,4,5?

in how many of them will 0 be at tens place?

3.Find the number of 5 digit numbers that can be formed from the digits 1,2,4,6,8 (when no digit is repeated) but

i) the digits 2 and 8 are next to each other

ii) the digits 2 and 8 are not next to each other

Help will be appriciated.