Convert decimal number 262 to an octal number.

406.

Explanation:

continuously dividing the base 10 or decimal number by 8 till the decimal number does not becomes zero and the result is the remainders in reverse.

Remainder on 262 / 8 = 6.

Remainder on 32 / 8 = 0.

Remainder on 4 / 8 = 4.

Octal number=406.