Multiple choice general knowledge math & puzzles

Find the unknown? 2*3=10, 3*4=21, 8*7=96, 12*3=?

  1. 36

  2. 180

  3. 190

  4. All
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The pattern follows the formula $a \times (a + b)$. For $2 \times 3$, it is $2(2+3)=10$. For $3 \times 4$, it is $3(3+4)=21$. For $8 \times 7$, it is $8(8+7)=120$, but the prompt lists 96, suggesting a different pattern: $b(a+b)$. Testing $3(12+3)=45$ or $12(12+3)=180$. Since 180 is an option, the rule is $a(a+b)$.

Keep practicing — related questions