EASY
12th CBSE
IMPORTANT
Earn 100

A rifleman is firing at a distant target and has only 10% chance of hitting it. The least number of rounds he must fire in order to have more than 50% chance of hitting it at least once is

50% studentsanswered this correctly

Important Questions on Binomial Distribution

EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 4
A fair coin is tossed a fixed number of times. If the probability of getting seven heads is equal to that of getting nine heads, the probability of getting two heads is
EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 5
A fair coin is tossed 100 times. The probability of getting tails an odd number of times is
EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 6

A fair die is thrown twenty times. The probability that on the tenth throw the fourth six appears is

EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 7
If X is a binomial variate with parameters n and p, where 0 <p < 1 such that PX=rPX=n-r is independent of n and r then p equals
EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 8
Let X denote the number of times heads occur in n tosses of a fair coin. If P(X= 4),P(X= 5) and P(X= 6) are in AP, the value of n is
EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 9
One hundred identical coins, each with probability p of showing heads are tossed once. If 0 <p< 1 and the probability of heads showing on 50 coins is equal to that of heads showing on 51 coins, the value of p is
EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 10
A fair coin is tossed 99 times. If X is the number of times head appears, then P(X=r) is maximum when r is
EASY
12th CBSE
IMPORTANT
MATHEMATICS CLASS XII VOLUME-2>Chapter 14 - Binomial Distribution>MULTIPLE CHOICE QUESTIONS (MCQs)>Q 11
The least number of times a fair coin must be tossed so that the probability of getting at least one head is at least 0.8, is