Question

write all possible 2 digit number using the digits 4,0 and 9 repetition of digits is not allowed also find their sum
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Answer 1

Answer:

40,90,49,94

Explanation:

40+90+49+94=273

Answer 2

Answer:

The given digits are 0,4,9 and repetition of digits is not allowed.

Out of the given digits, the possible ways of choosing the two digits are

4,0;4,9;9,0

Using the digits 4 and 0, the number are 40.

Using the digits 4 and 9, the numbers are 49 and 94.

Similarly,Using the digits 9 and 0, the numbers are 90

Hence, all possible 2-digit numbers are 40,49,90,94

∴ Sum of above numbers =40+49+90+94=273