In a high school, a committee has to be formed form a group of 6 boys M1,M2,M3,M4,M5,M6 and 5girls G1,G2,G3,G4,G5i) Let α1be the total number of ways in which the committee can be formed such that the committee has 5 members, having exactly 3 boys and 2 girlsii) Let α2 be the total number of ways in which the committee can be formed such that the committee has at least 2 members, and having an equal number of boys and girlsiii) Let α3 be the number of ways in which the committee can be formed such that the committee has 5 numbers, at least 2 of them being girlsiv) Let α4 be the total number of ways in which the committee can be formed such that the committee has 4 members, having at lest 2 girls and such that both and are NOT in the committee together. LIST-I LIST-II P. The value of α1 is 1.136 Q. The value of α2 is 2. 189 R. The value of α3 is 3. 192 S. The value of α4 is 4. 200 5. 381 6. 461
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a
P-4;Q-6;R-2;S-1
b
P-4;Q-2;R-3;S-1
c
P-1;Q-4;R-2;S-3
d
P-4;Q-6;R-5;S-2
answer is D.
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Detailed Solution
(1) α1=6352=200 So P→4 (2) α2=6151+6252+6353+6454+6555=115−1=46! So Q→6 (3) α3=5263+5362+5461+5560=115−5065−5164=381 So R→5 (4) α2=5262−4151+5361−4211+54=189 So S→2