A is 3 years older than B and 3 years younger than C. B and D are twins. How older is C than D?
সমাধান
সঠিক উত্তর: Option C
Since B and D are twins, so B = D.
Now, A = B + 3 and A = C - 3.
Thus, B + 3 = C - 3 D + 3 = C-3 C - D = 6.
