Question

If 64 × 7 = 460 and 25 × 8 = 212, then 43 × 8 = ?

• A. 376
• B. 360
• C. 356
• D. 25

Hint:

In number series or coding operations, check for consistent arithmetic additions or multiplications after a base operation.

Answer 1

The Correct Option is C

Pattern: $(a \times b) - (a + b)$
For 64 × 7: $(64 \times 7) - (64 + 7) = 448 - 71 = 377$ → doesn't match.
Try: $64 \times 7 = 448$, and 448 - (Sum of digits of 64 + 7 = 6+4+7 = 17) → 448 - 17 = 431
Try alternate logic. If 64×7 = 460 and 25×8 = 212, then
Check: $64 \times 7 = 448$, then $448 + 12 = 460$ → Add 12
Similarly $25 \times 8 = 200$, then $200 + 12 = 212$ → Same pattern. So +12 is used.
Then for 43 × 8 = 344
344 + 12 = \boxed{356}