If 3 × 7 + 12/12 × 7 + 3 × 4 - 2 = 1/k, then what is the value of K?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 1/38.
3 × 7 + 12/12 × 7 + 3 × 4 - 2 = 1/k
⇒ 21 + 1 × 7 + 12 - 2 = 1/k
⇒ 21 + 7 + 10 = 1/k
k = 1/38