Advertisements
Advertisements
प्रश्न
For all n > 0, nC1 + nC2 + nC3 + …… + nCn is equal to:
विकल्प
2n
2n – 1
n2
n2 – 1
Advertisements
उत्तर
2n – 1
APPEARS IN
संबंधित प्रश्न
Which of the following are true:
(2 +3)! = 2! + 3!
Evaluate each of the following:
6P6
Three men have 4 coats, 5 waist coats and 6 caps. In how many ways can they wear them?
A test consists of 10 multiple choice questions. In how many ways can the test be answered if each question has four choices?
8 women and 6 men are standing in a line. In how many arrangements will no two men be standing next to one another?
Find the sum of all 4-digit numbers that can be formed using digits 1, 2, 3, 4, and 5 repetitions not allowed?
Find the sum of all 4-digit numbers that can be formed using digits 0, 2, 5, 7, 8 without repetition?
In a certain city, all telephone numbers have six digits, the first two digits always being 41 or 42 or 46 or 62 or 64. How many telephone numbers have all six digits distinct?
A five-digit number divisible by 3 is to be formed using the numbers 0, 1, 2, 3, 4 and 5 without repetitions. The total number of ways this can be done is ______.
The number of different words that can be formed from the letters of the word INTERMEDIATE such that two vowels never come together is ______.
