Question

how many 3 digit numbers are without repetatation​

Answer 1

Answer:

Step-by-step explanation:

Hence, the desired number is 41 × 8 = 328 numbers 3-digit even numbers exist with no repetitions.

Answer 2

Answer:

259

Step-by-step explanation:

Total numbers are 100 to 999

ie 899 but we remove

100

101

110

111

to

119

121

122

131

133

141

144

151

155

161

166

171

177

181

188

191

199

=28 between 100 and 200

28 between 200 and 300

.....

28 between 900 and 999

Add them

we get 28x9

= 259