The number of natural numbers less than 7000 which can be formed by using the digits 0 ,   1 ,   3 ,   7 ,   9 (repetition of digits allowed) is equal to:

Question

The number of natural numbers less than 7000 which can be formed by using the digits 0 , &#160; 1 , &#160; 3 , &#160; 7 , &#160; 9 (repetition of digits allowed) is equal to:

Aicharya · Accepted Answer

&#8756; Total number formed less than 7000 = 3 &#215; 5 &#215; 5 &#215; 5 = 375 &#8756; Total natural number formed less than 7000 = 375 - 1 = 374 (number zero has been excluded)

The number of natural numbers less than 7000 which can be formed by using the digits 0 ,   1 ,   3…

Solution

The number of natural numbers less than 7000 which can be formed by using the digits 0 , &#160; 1 , &#160; 3…

Solution

The number of natural numbers less than 7000 which can be formed by using the digits 0 , 1 , 3…