The probability that a teacher will give an unannounced test during any class meeting is 1-5-If a student is absent twice- the probability that he will miss atleast one test- is

Probability of( student never misses a test when he is absent) =(1 1/5 )×(1 1/5 ) =16/25 Hence, probability that he will miss atleast one test =1 16/25 =16/2 ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XI

Mathematics

Independent Events

The probabili...

Question

The probability that a teacher will give an unannounced test during any class meeting is $\frac{1}{5}$ .If a student is absent twice, the probability that he will miss atleast one test, is

\frac{7}{25}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\frac{9}{25}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

\frac{16}{25}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

\frac{24}{25}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $\frac{9}{25}$
Probability of( student never misses a test when he is absent)
$= (1 - \frac{1}{5}) \times (1 - \frac{1}{5}) = \frac{16}{25}$
Hence, probability that he will miss atleast one test
$= 1 - \frac{16}{25} = \frac{16}{25}$

Suggest Corrections

Similar questions

Q. The probability that a teacher will give an unannounced test during any class meeting is

\frac{1}{5}

.If a student is absent twice, the probability that he will miss atleast one test, is

Q. The probability that a teacher will give an unannounced test during any class meeting is

\frac{1}{5}

. If a students is absent twice, the probability that he will miss at least one test is:

Q. Probability that a student will succeed in IIT entrance test is 0.2 and that he will succeed in Roorkee entrance test is 0.5. If the probability that he will be successful at both the places is 0.3, then the probability that he does not succeed at both the places is

Q. In an exam a student will be qualified if he passes at least two of three test. The probability that he will pass the first test is

P

. If he fails in one of the test then the probability of his passing in the next test

\frac{P}{2}

otherwise it is

^{'} P^{'}

. The probability of his success follow the polynomial

(a p^{3} + b p^{2} + c)

then find the value of

(a + 2 b + 3 c)

Q. The probability that India wins a cricket test match against England is

\frac{1}{3}

. If India and England play 3 matches, the probability that India will win atleast one match is

Join BYJU'S Learning Program

The probability that a teacher will give an unannounced test during any class meeting is 15.If a student is absent twice, the probability that he will miss atleast one test, is

The correct option is B 925Probability of( student never misses a test when he is absent) =(1−15)×(1−15)=1625 Hence, probability that he will miss atleast one test =1−1625=1625

The probability that a teacher will give an unannounced test during any class meeting is $\frac{1}{5}$ .If a student is absent twice, the probability that he will miss atleast one test, is

The correct option is B $\frac{9}{25}$
Probability of( student never misses a test when he is absent)
$= (1 - \frac{1}{5}) \times (1 - \frac{1}{5}) = \frac{16}{25}$
Hence, probability that he will miss atleast one test
$= 1 - \frac{16}{25} = \frac{16}{25}$