SSC Quantitative Aptitude Questions (Day-81)

Dear Aspirants, you can find the Quantitative Aptitude questions with detailed explanations for the SSC exams. Nowadays the competitive level of the exam has been increasing consistently. Due to the great demand for the government job, the level of the toughness reached greater. Candidates have to enhance the preparation process in order to drive in the right path. It doesn’t need to clear the prescribed cutoff. You must have to score good marks more than the cut off marks to get into the final provisional list. Here we have updating the Quantitative Aptitude questions with detailed explanations on a daily basis. You can practice with us and measure your level of preparation. According to that you can sculpt yourself in a proper way. SSC aspirants kindly make use of it and grab your success in your career.

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1) If  a/3 = 1- 3/a ; then what is the value of a⁵?

(a) – 81

(b) 148

(c) – 243

(d) 227

2) 

(a) 1

(b) 0

(c) 2

(d) – 1

3) If x³ + 6x² + 12x = 19, then what is the value of x³?

(a) 8

(b) 27

(c) – 1

(d) 1

4) 

(a) 2/5

(b) 3/5

(c) 4/5

(d) 1/5

5) If x² + 16 = -4x, then what is the value of x³ – 64?

(a) 128

(b) 0

(c) 64

(d) 256

6) PQRS is a rectangle, A, B, C and D are the mid points of sides PQ, QR, RS and PS respectively. If area of ΔPQR is 48 cm², then what is the area (incm²)  of ΔBCD?

(a) 24

(b) 6

(c) 16

(d) 12

7) If PA is the median of the triangle PQR and G be the centroid, then what is the ratio of (PA + GA) : (PG – GA)?

(a) 4 : 1

(b) 3 : 1

(c) 2 : 1

(d) 3 : 2

8) In a ΔPQR, PD is the median and G is centroid. If PG = 24 cm, then what is the length (in cm) of PD?

(a) 48

(b) 36

(c) 60

(d) 72

9) The tangents drawn at the point P and Q of a circle centered at O meet at A. If ∠POQ = 120°, then what is the ratio of ∠PAQ : ∠PAO?

(a) 2 : 3

(b) 4 : 1

(c) 2 : 1

(d) 5 : 2

10) ABCD is a trapezium, such that AB = CD and AD||BC. AD = 10 cm and BC = 18 cm. If the area of ABCD is 70 cm², then what is the value (in cm) ofCD?

(a) 5

(b) √29

(c) √41

(d) 6

Answers :

1) Answer: C

a/3 + 3/a = 1

then (a/3)³ = –1

a³ = – 27

a = –3

a⁵ = –243

2) Answer: B

Let x = 1

a = 4   & b = 2

put these values in given equation,

= 1/ ((4 –3)) + 1/(2 –3)

= 1/1  – 1/1

= 0

3) Answer: D

x³ + 6x² + 12x + 8 = 27

(x + 2)³ = 3³

(x + 2) = 3

x = 1

4) Answer: A 

5) Answer: B

x² +4x + 16 = 0 →  (1)

eqn. (1) × 4 ⇒ 4x² + 16x + 64 = 0 → (ii)

eqn. (1) Xx ⇒ x³ +4x² + 16x = 0→ (iii)

eqn. (iii) – eqn .(i)

x³ + 4x² +16x =0

4x² +16x + 64 = 0

x³ – 64 = 0

6) Answer: A

Area of ∆BCD = ¼ Area of PQRS

= ½ Area of ∆PQR

= 48/2

= 24 cm²

7) Answer: A

Let PA = 3

Then PG = 2        (∵ G is centroid hence PG:GA= 2:1)

GA = 1

Then

= (PA + GA) : (PG – GA)

= (3 + 1) : (2 – 1)

= 4 : 1

8) Answer: B

If PG = 24 cm

Then, GD = 12 cm

PD = 36 cm

9) Answer: C

∠PAQ= 120/2= 60⁰

∠PAO = 30⁰

∠PAQ : ∠PAO = 2 : 1

10) Answer: C

Area of trapezium = ½ (sum of parallel sides) × height

70 = ½ (10 + 18) × height

140 = 28 × height

Height = 5 cm

CD =  √(25+16)

=√41 cm

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