If + means −, − means ×, × means ÷, and ÷ means +, then what will come in place of the question mark (?) in the following equation?
30 − 5 ÷ 2 + 10 × 2 = ?

Correct option is B

Given:
30 − 5 ÷ 2 + 10 × 2 = ?
(Where + means −, − means ×, × means ÷, and ÷ means +)

Logic:
Replace the given symbols as per the instructions:
‘+’ → ‘−’
‘−’ → ‘×’
‘×’ → ‘÷’
‘÷’ → ‘+’

Explanation (applied left to right):
Original: 30 − 5 ÷ 2 + 10 × 2
After replacement: 30 × 5 + 2 − 10 ÷ 2

Now, apply BODMAS rule:
= (30 × 5) + 2 − (10 ÷ 2)
= 150 + 2 − 5
= 152 − 5
= 147

Final Answer:
147

Final Correct Option:
(b) 147