Select the related letters from the given alternatives.
73 : 21 :: 48 : ?

Options

A. 12
B. 32
C. 51
D. 20

Answer

To solve the analogy problem where we need to find the relationship between the numbers, we start with the given pairs:

**Step 1:** Identify the first pair of numbers: 73 and 21.
- We will analyze how 73 relates to 21.

**Step 2:** Break down the number 73 into its digits:
- The digits are 7 and 3.

**Step 3:** Calculate the product of the digits of 73:
- \(7 \times 3 = 21\).
- This shows that 21 is derived from 73 by multiplying its digits.

**Step 4:** Now, apply the same logic to the second number, 48.
- Break down 48 into its digits: 4 and 8.

**Step 5:** Calculate the product of the digits of 48:
- \(4 \times 8 = 32\).

**Step 6:** Conclude the relationship:
- Just as 73 relates to 21 through the multiplication of its digits, 48 relates to 32 through the same method.

Thus, the answer to the question is **32**.