If 75% of a class answered the 1stquestio… | Answer

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Quantitative Aptitude

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Set

If 75% of a class answered the 1stquestion on a certain test correctly, 55% answered the 2ndquestion on the test correctly and 20% answered neither of the questions correctly, what percent answered both correctly?
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ক)

10%

খ)

20%

গ)

30%

ঘ)

none

Explanation

প্রশ্নে বলা হচ্ছে, ৭৫% ছাত্র একটি প্রশ্নের সঠিক উত্তর দিল, দ্বিতীয় প্রশ্নে ৫৫% সঠিক উত্তর দিল। ২০% কোনো উত্তরই সঠিকভাবে দিল না। কত শতাংশ ছাত্র সঠিক উত্তর দিল? 1 st প্রশ্নের উত্তর ভুল করে = 100 - 75 = 25% 2 nd প্রশ্নের উত্তর ভুল করে = 100 - 55 = 45% ∴ দুটি প্রশ্নেরই উত্তর ভুল দেয় = 25 + 45 - 20 = 50% ∴ দুটি প্রশ্নেরই Correct উত্তর দেয় = 100 - 50 = 50%

If A = {1, 2, 3, 4} and B = {3, 4, 5, 6}, Which of the following is true?In an exam 35% failed in Bengali, 45% falied in English and 20% failed in both. What percent of students passed in both?In recent survey of the students of a public university, it is found that 65% students are good in Mathematics and 45% students are good in Statistics. How many students are good in both Mathematics and Statistics of the public university?

If 75% of a class answered the 1stquestion on a certain test correctly, 55% answered the 2ndquestion on the test correctly and 20% answered neither of the questions correctly, what percent answered both correctly?Reading

If 75% of a class answered the 1stquestion on a certain test correctly, 55% answered the 2ndquestion on the test correctly and 20% answered neither of the questions correctly, what percent answered both correctly?

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If 75% of a class answered the 1stquestion on a certain test correctly, 55% answered the 2ndquestion on the test correctly and 20% answered neither of the questions correctly, what percent answered both correctly?
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