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Difficulty: 3/102022 NMTC 2022 (QII-28)

Decimal representation of (A35B0F)_16 is

Guide / Hint

Hint 1: Convert the hexadecimal number to base 10 using the powers of 16: .

Hint 2: Substitute the decimal values for hexadecimal letters: , , and .

Hint 3: Multiply each value by its corresponding power of 16 and sum them up.

Solution

Step 1 (Formulate Base-16 Expansion): A hexadecimal number is converted to base-10 decimal by multiplying each digit by its corresponding power of 16:

Step 2 (Substitute Hexadecimal Constants): In hexadecimal, , , and . Substituting:

Step 3 (Calculate Powers of 16 and Multiply):

Step 4 (Sum all Terms):

Step 5 (Conclusion): The decimal representation of the number is exactly 10705679.

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