From a class of 10 boys and 6 girls , 10 students are to be selected for a competition , atleast including 4 boys and 4 girls , the two girls who won the prizes last years should be included , in how many ways the selection can be made.
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they will select 4boy and 4girls 2which have won last year
so 4girls+2which have won last time=6 girls
4boy +6 girls =10 students
so 4girls+2which have won last time=6 girls
4boy +6 girls =10 students
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