If 75% students of a class answered the 1st question on a certain test correctly, 55% answered the second question on the test correctly and 20% answered neither of the questions correctly, what percent answered both correctly.
A 10%
B 20%
C 30%
D None
Solution
Correct Answer: Option B
অ্যাপ/ওয়েবসাইটে রুটিনভিত্তিক নিয়মিত লাইভ পরীক্ষা হচ্ছে।