VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – QUESTION 16 : A committee of 6 people is to be chosen from 8 students and 6 teachers so that it contains at least 3 students and at least 2 teachers. The number of ways this can be done is – (A) 1050, (B) 1120, (C) 7560, (D) 840, (E) 2170.
VOLUNTEER TRAINING FOR DISADVANTAGED IN MATHS – ANSWER 16 : E. Two combinations are possible, either (3 students + 3 teachers) or (4 students + 2 teachers). Number of ways = 8C3 x 6C3 + 8C4 x 6C2 = (8!) / [ (3!) (5!) ] x (6!) / [ (3!) (3!) ] + (8!) / [ (4!) (4!) ] x (6!) / [ (4!) (2!) ] = 2170. Excel language is =fact(8)/(fact(3)*fact(5))*fact(6)/(fact(3)*fact(3))+fact(8)/(fact(4)*fact(4))*fact(6)/(fact(4)*fact(2)), which is also equal to 2170.
| Is This Answer Correct ? | 0 Yes | 0 No |
If you start with 1 bacterium and double the number every 15 minutes, how many bacteria will you have at the end of 3 hours and 45 minutes?
If in a sequence of natural numbers, starting with 2, you begin eliminating every second number after 2, then every third number after 3, then every fourth numberafter 4, and so on, what type of numbers will be left?
Discuss the inter & intra disciplinary nature of Mathematics.
0 Answers Mahatma Gandhi University,
What is Regression?
explain the disciplinary values of teaching mathematics.
0 Answers Mahatma Gandhi University,
if card punch operator can process 80 cards in half an hour how many cards can this process in 7hr 30min?
Give range for the following six values 2, 7, 11, 19, 25, 33:
the cordinates of A,b,c are respectively (2,3) ,(4,4) AND (0,-2). If abcd is a parallelgram. The coordinates of D are
Replicon company exam papers
What is the difference between Integration & Addition?
find 25% of 592=
Give me the eg. of any application of mathematics in any filed ?