PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo\(1500\) families were surveyed and following data was recorded about their maids at homes.
Types of maids | Only part time | Only full time | Both |
Number of families | \(860\) | \(370\) | \(250\) |
A family is selected at random. Find the probability that the family selected has:
(i) Both types of maids \(=\)
(ii) Part time maids \(=\)
(iii) No maids \(=\)
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