Question

write the smallest 4 digit number,using different digits.express it as a product of prime numbers.

Answer 1

The smallest four digits are 0,1,2 and 3

using these numbers possible numbers are

1023,1032,1203,1302,1230,1320

2013,2031,2103,2301,2130,2310

3012,3021,3201,3102,3120,3210

There are 18 possible numbere. Out of this 18 numbers least number is 1023

1023 can be written as product of prime numbers

1023 = 3 x 11 x 31

3,11, and 13 are only three factors of 1023