RRB GROUP D QUANT QUIZ

Question 1:

Find the value

$\frac{1}{5}+\frac{1}{45}+\frac{1}{117}+\ldots \ldots . .+\frac{1}{3965}$

$\frac{26}{16}$

$\frac{16}{65}$

$\frac{65}{16}$

$\frac{64}{65}$

Question 2:

Pankaj buys 10 lemons for Rs. 80 . At what price should he sell a dozen lemons, if he wishes to make a profit of 25% ?

Rs. 10

Rs. 120

Rs. 100

Rs. 240

Question 3:

The average age of 17 students of a class is 25 years when a new student join the class the average age of the class become 31 years then find the age of new student .

108 years

133 years

140 years

116 years

Question 4:

A man rides at the rate of $18 \mathrm{~km} / \mathrm{hr}$, but stops for $6$ minutes to change horses at the end of every $7 \mathrm{~km}$. The time that he will take to cover a distance of $90 \mathrm{~km}$ is

$6 \mathrm{hrs}$

$6$hrs. $12 \mathrm{~min}$.

$6$hrs. $18$ min.

$6 \mathrm{hrs}, 24 \mathrm{~min}$.

Question 5:

If the diagonals of a rhombus are 8 and 6 , then the square of its side is :

25

55

64

36

Question 6:

What is the LCM of 15,25 and 45 ?

45

135

252

225

Question 7:

A sum of Rs. 14274 is divided into three parts and given on loan at 5% simple interest to A,B and C for 3, 2 and 4 years respectively. If the amounts of all three are equal after their respective periods of loan, then B received a loan of .... (in Rs.)

4140

4416

4628

4968

Question 8:

The smallest number which when added to 789654 as to obtain a perfect square is -

667

793

524

496

Question 9:

If $\cos ^{4} \theta-\sin ^{4} \theta=\frac{2}{3}$, then the value of $1-2 \sin ^{2} \theta$ is:

$\frac{4}{3}$

0

$\frac{2}{3}$

$\frac{1}{3}$

Question 10:

Anant finishes a journey by car in 14 hours. He travels the first half of the journey at a speed of 60 km/h and the second half of the journey at a speed of 80 km/h. The total distance covered (in km) is:

480

720

960

1200