Question

If $6 + 2 = 16$, $7 + 3 = 22$, then $8 + 4 = ?$

• A. 28
• B. 30
• C. 32
• D. 34

Hint:

When direct arithmetic patterns fail, check if a constant added/subtracted number varies systematically.

Answer 1

The Correct Option is B

Step 1: Given \(6 + 2 = 16\), check if it fits formula \(a + b = a \times b + k\).
\[ 6 \times 2 + 4 = 12 + 4 = 16 \] Step 2: Check for \(7 + 3 = 22\):
\[ 7 \times 3 + 1 = 21 + 1 = 22 \] Step 3: Notice the added number decreases by 3 (from 4 to 1), so next addition is \(-2\).
Step 4: Calculate \(8 + 4\):
\[ 8 \times 4 - 2 = 32 - 2 = 30 \] Hence, the answer is 30.