Discussion

Explanation:

Option (a):
50 = 2 × 3 × 30 + 10 - 40 ÷ 20
50 = 180 + 10 - 2
50 = 188
This is not true, hence option (a) is rejected.

Option (b):
50 - 2 ÷ 3 × 30 × 10 = 40 × 20
50 - 2/3 × 30 × 10 = 800
50 - 20 × 10 = 800
50 - 200 = 800
-150 = 800
This is not true, hence option (b) is rejected.

Option (c):
50 = 2 × 3 + 30 × 10 - 40 ÷ 20
50 = 6 + 300 - 2
50 = 304
This is not true, hence option (c) is rejected.

Option (d):
50 × 2 = 3 × 30 × 10 - 40 × 20
100 = 900 - 800
100 = 100
This is true.

Hence, option (d).

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