# Quantitative Aptitude - CDS Mock Test

@ : Home > Practice Tests > Aptitude Tests > CDS Mock Test

## CDS Mock Test

Q1) A bag contains 4 black and 5 red balls. A second bag contains 2 black and 3 red balls. One bag is selected at random. From the selected bag , one ball is drawn. Find the probability that the ball drawn is black?
1) 19/45
2) 38/45
3) 3/4
4) 3/7

Q2) Average of 10 numbers is ‘k’. Each number is multiplied by ‘3’. What is the new average.
1) k
2) 3k
3) k + 3
4) k/3

Q3) Find the area of the sector of a circle whose radius is 14 cm and angle of the sector is 45o
1) 77 cm2
2) 38.5 cm2
3) 19.25 cm2
4) 154 cm2

Q4) If radius of a sphere is increased by 10%, find the percentage change in it’s Volume?
1) 33.3%
2) 30%
3) 33.1%
4) 10%

Q5) How many even palindromes of 5 digits are possible.
1) 500
2) 900
3) 400
4) 1100

Q6) If mean of A and B is 32, A and C is 29 and B and C is 37, then find the value of (B – A)?
1) 6
2) 10
3) 8
4) 16

Q7) There is train of 250 m length moving at a speed of 54 km/h. Find the time taken by the train to cross a tunnel of length 164 m.
1) 26.4 sec
2) 25.8 sec
3) 27.6 sec
4) 24 sec

Q8) Two watches are sold at Rs.240 each, one at a profit of 20% while another at an equal loss of 20%. Find the overall profit or loss.
1) Loss of Rs. 19
2) No profit no loss
3) Gain of Rs.20
4) Loss of Rs.20

Q9) What is the square root of 0.00001521?
1) 0.00039
2) 0.0039
3) 0.039
4) 0.000039

Q10) Find the approximate value of 800.25?
1) 4
2) 3
3) 3.5
4) 2.5

SCOREPERFORMANCE
9-10 Excellent
7-8 Good
5-6 Satisfactory
1-4 Poor