(Q). A class has 30 students out of which 23 are boys & 7 are girls. In how many ways 15 students can be selected if 5 seats are reserved for girls student?
Solution:-
5G×10B + 6G×9B + 7G×8B
= ⁷C₅ײ³C₁₀ + ⁷C₆ײ³C₉ + ⁷C₇ײ³C₈ Answer
(Q). A class has 30 students out of which 23 are boys & 7 are girls. In how many ways 15 students can be selected if 5 seats are reserved for girls student?
Solution:-
5G×10B + 6G×9B + 7G×8B
= ⁷C₅ײ³C₁₀ + ⁷C₆ײ³C₉ + ⁷C₇ײ³C₈ Answer