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in a certain examination 52 candidates offered biology 60 history,96 mathematics,21 offered biology and history,22...

in a certain examination 52 candidates offered biology 60 history,96 mathematics,21 offered biology and history,22 mathematics and biology,16 mathematics and history.If 7 candidates offered all the three subjects:
a) how many candidates where there for the examination
b) how many candidates offered one subject only?
c) how many candidates offered two subjects only?
d) how many candidates offered atleast two subjects?

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts