Question

how many nos greater than 10 lacks can be formed from 2,3,0,3,4,2,3​

Answer 1

Answer:

Since the number is to be greater than 10 lakhs i.e. 10,00,000 it must be of seven digits and should begin with either 2 or 3 or 4.

Beginning with 2. Remaining 6 (Three 3's are alike)

∴

3!

6!

=120

Beginning with 3. Remaining 6 (Two 2's and two 3's are alike)

∴

2!2!

6!

=180

Beginning with 4. Remaining 6 (Two 2's and three 3's)

∴

3!.2!

6!

=60

Required number is 120 + 180 + 60 = 360