BIHAR CGL PRE MATHS QUIZ-7

Attempt now to get your rank among 12 students!

Question 1:

The average of ten numbers is 6, If each number is multiplied by 12 , then what will be average of the new set of numbers?

Question 2:

There are 20 balls in a basket, which contains 9 red, 7 white and 4 black balls. If two balls are drawn at random from the basket, what will be the possibility that both the balls are red?

Question 3:

In the examination Rajesh got 25% marks and failed by 64 marks. If he had got 40% marks he would have secured 32 marks more than the pass marks. Find the maximum marks in the examination.

Question 4:

If $X+Y=3, X Y=2$, then find the value of $X^{3}-Y^{3}$.

Question 5:

If a sum becomes double in 16 years, how many times will it be in 8 years?

Question 6:

Two station P and Q were $310$ $\mathrm{~km}$ apart on a straight line. One train start from P at $10$ $\mathrm{am}$ in the morning and travels towards $\mathrm{Q}$ with a speed of $40$ $\mathrm{~km/h}$ . Another train start from Q at $11$ $\mathrm{am}$ in the morning and travel towards $P$ at a speed of $50 \mathrm{~km} / \mathrm{hr}$. At what time will they meet.

Question 7:

$\mathrm{A}$ and $\mathrm{B}$ can do a job together in 12 days. $\mathrm{A}$ is 2 times as efficient as B. In how many days B can alone complete the work.

Question 8:

The value of $\frac{40+\frac{3}{4} \text { of } 32}{37+\frac{3}{4} \text { of }(34-6)}$ is:

Question 9:

When a discount of $10\%$ is given on a sweater, there is a $28\%$ profit. What will be the profit if the discount is $14 \%$?

Question 10:

39 candies are to be distributed to $A$ and $B$ in the ratio of $4: 9$, how many more candies does $B$ get than $A$ ?