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There are 5 professors (P1,P2,P3,P4,P5) and 10 students (S1,S2,.......S10) out of whom a committee of 2 professors and 3 students is to be formed. Find the number of committees in which P1 and P2 cannot serve together and S1 will serve if S2 is present in the committee ..
Q.8 / Arihant ALGEBRA / LEVEL III / Page no. 426
The answer given is 48 but I got 828.. Please chek this out and reply as soon as possible ...
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