a = 1, b = 1, c = 2, d = -2 হলে a - ( -b) -(-c) - (-d) = কত?
সমাধান
সঠিক উত্তর: Option A
দেওয়া আছে, a = 1, b = 1, c = 2, d = -2
∴ a - (-b) - (-c) - (-d) = a + b + c+ d
= 1 + 1 + 2 - 2
= 2
∴ a - (-b) - (-c) - (-d) = a + b + c+ d
= 1 + 1 + 2 - 2
= 2
