Question

How many 3-digit numbers can be formed by using 2, 3, 4, 5 and
6?​

Answer 1

Answer:

234, 324, 432, 532, 632, 654

There are many more

Answer 2

Answer:

125

Step-by-step explanation:

each of units , 10s and 100th  place has 5 options /choices.

so 5x5x5=125

222 223 224 225 226

232 233 234 235 236

242 243 244 245 246

252 253 254 255 256

262 263 264 265 266

so you get 25 starting with 5 , substitute 2 with 3,4,5,6 in hundredth place and you shall get another 4 x 25 = 100 from those.