search
Log In
0 votes

Out of all the $2$-digit integers between $1$ and $100$, a $2$-digit number has to be selected at random. What is the probability that the selected number is not divisible by $7$?

  1. $13/90$
  2. $12/90$
  3. $78/90$
  4. $77/90$
in Numerical Ability 1.4k points 4 7 17
recategorized by

Please log in or register to answer this question.

Answer:

Related questions

0 votes
0 answers
The current erection cost of a structure is $Rs$. $13,200$. If the labour wages per day increase by $1/5$ of the current wages and the working hours decrease by $1/24$ of the current period, then the new cost of erection in $Rs$. is $16,500$ $15,180$ $11,000$ $10,120$
asked Feb 19, 2017 in Numerical Ability piyag476 1.4k points
0 votes
0 answers
Find the sum of the expression $\dfrac{1}{\sqrt{1}+\sqrt{2}}+\dfrac{1}{\sqrt{2}+\sqrt{3}}+\dfrac{1}{\sqrt{3}+\sqrt{4}}+ \dots \dots +\dfrac{1}{\sqrt{80}+\sqrt{81}}$ $7$ $8$ $9$ $10$
asked Feb 19, 2017 in Numerical Ability piyag476 1.4k points
0 votes
1 answer
A tourist covers half of his journey by train at $60$ $km$/$h$, half of the remainder by bus at $30$ $km$/$h$ and the rest by cycle at $10$ $km$/$h$. The average speed of the tourist in $km$/$h$ during his entire journey is $36$ $30$ $24$ $18$
asked Feb 19, 2017 in Numerical Ability piyag476 1.4k points
0 votes
0 answers
The probability that a student knows the correct answer to a multiple choice question is $\dfrac{2}{3}$ . If the student does not know the answer, then the student guesses the answer. The probability of the guessed answer being correct is $\dfrac{1}{4}$. Given that the student has answered the question ... the correct answer is $\dfrac{2}{3} \\$ $\dfrac{3}{4} \\$ $\dfrac{5}{6} \\$ $\dfrac{8}{9}$
asked Feb 19, 2017 in Probability and Statistics piyag476 1.4k points
0 votes
0 answers
Let $X$ be a normal random variable with mean $1$ and variance $4$. The probability $P \left \{ X \right.<\left. 0 \right \}$ is $0.5$ greater than zero and less than $0.5$ greater than $0.5$ and less than $1.0$ $1.0$
asked Feb 19, 2017 in Probability and Statistics piyag476 1.4k points
...