Correct option is B
Given:
Five three-digit numbers – 210, 878, 407, 692, 140
Logic:
Then, subtract the third digit of the highest number from the first digit of the lowest number.
Explanation (applied left to right):
Highest number = 878 → third digit = 8
Lowest number = 140 → first digit = 1
Now, perform subtraction: 1 − 8 = −7
Final Answer:
−7
Final Correct Option:
(b) −7