Math miscellaneousHard
Question
A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is
Options
A.140
B.196
C.280
D.346
Solution
Number of choices = 5C4 × 8C6 + 5C5 × 8C5
= 140 + 56.
Hence, (B) is the correct answer
= 140 + 56.
Hence, (B) is the correct answer
Create a free account to view solution
View Solution FreeMore Math miscellaneous Questions
The number of integral solution of the equation x + y + z = 0, with x ≥ - 5, y ≥ - 5, z ≥ - 5 is : -...The solution of the equation = e-2x...The number of ways in which 6 men and 5 women can dine at a round table if no two women are to sit together is given by...If A = and I = then which one of the following holds for all n ≥ 1, by the principle of mathematical indunction...Number of divisors of 1024 × (225)2 × (25)7 which are of the form 3k + 1 (where k is a whole number) is equal ...