SSC CGL Undated PYQs

Question 1

If 9#3=6; 15#3=9; 60#4=32; then what is the value of 27#3=?

Accepted Answer

The pattern is (A + B) / 2. For 27#3, add 27 and 3 to get 30, then divide by 2 to get 15.

Question 2

In which of the following city "Urja Ganga", 1500 km long gas pipeline project has been launched in October, 2016?

Accepted Answer

PM Narendra Modi launched the 1500 km long 'Urja Ganga' gas pipeline project in Varanasi in October 2016 to provide piped cooking gas to residents in eastern India.

Question 3

At what rate of compound interest (in %) per annum will a sum of Rs. 15,000 become Rs. 18,150 in 2 years?

Accepted Answer

Divide the amount by the principal: 18150/15000 = 121/100. Since the time is 2 years, take the square root to get 11/10. The interest is 1/10, which means 10%.

Question 4

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? _ yzaa _ y _ xy _ aazy _ _ yzaa _ y _ xy _ aazy _

Accepted Answer

The pattern consists of 'xyza' followed by its reverse 'azyx', which is then repeated. Filling the blanks with 'x, z, x, z, x' completes the series as 'xyza azyx xyza azyx'.

Question 5

If in 3 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs. 25,000 in 3 years at the same rate?

Accepted Answer

Simple interest for 3 years is 18%, so the rate is 6% per annum. Compound interest on Rs. 25,000 at 6% for 3 years is 25000 × ((1.06)³ - 1) = Rs. 4775.4.

Question 6

Who was the winner of 2017 Australian Grand Prix?

Accepted Answer

Sebastian Vettel won the 2017 Australian Grand Prix driving for Ferrari, defeating Mercedes driver Lewis Hamilton who finished second.

Question 7

In the following question, select the related number from the given alternatives. 50 : 65 : : 122 : ?

Accepted Answer

The pattern is n² + 1. 50 = 7² + 1, 65 = 8² + 1. Similarly, 122 = 11² + 1, so the next number is 12² + 1 = 145.

Question 8

Meter in a vehicle that calculates distance covered by the vehicle is called __________.

Accepted Answer

An odometer is an instrument used for measuring the distance traveled by a vehicle. A speedometer measures the current speed, not the distance.

Question 9

Term ' Gambit ' is associated with which of the following sport?

Accepted Answer

A 'Gambit' is a chess opening strategy where a player sacrifices material, usually a pawn, to achieve a favorable position or tactical advantage.

Question 10

In the following question, select the missing number from the given series. 1, 3, 6, 11, 18, ?

Accepted Answer

The differences between consecutive terms are 2, 3, 5, and 7, which are consecutive prime numbers. The next prime is 11, so 18 + 11 = 29.

Question 11

In the following question, select the related number from the given alternatives. 101 : 10201 : : 107 : ?

Accepted Answer

The pattern is x : x². The square of 101 is 10201. Similarly, the square of 107 is 11449.

Question 12

The sum of a fraction and 10 times its reciprocal is 37/4. What is the fraction?

Accepted Answer

Let the fraction be x. The equation is x + 10/x = 37/4. Testing option 1 (5/4): 5/4 + 10(4/5) = 5/4 + 8 = 37/4. It satisfies the condition.

Question 13

Δ ABC is right angled at B. If m∠A = 30o, what is the length of AB (in cm), if AC = 10 cm?

Accepted Answer

In right triangle ABC, cos(30°) = Base/Hypotenuse = AB/AC. So, √3/2 = AB/10, which gives AB = 5√3 cm.

Question 14

If A : B = 2 : 5, B : C = 4 : 3 and C : D = 2 : 1, then what is value of A : C : D?

Accepted Answer

Combine A:B = 2:5 and B:C = 4:3 to get A:B:C = 8:20:15. Then combine with C:D = 2:1 to get A:B:C:D = 16:40:30:15. Thus, A:C:D = 16:30:15.

Question 15

Which play of Shakespeare's was recently claimed to be dated wrongly?

Accepted Answer

Researchers recently claimed that Shakespeare's famous tragedy "Hamlet" was written earlier than traditionally believed, challenging the established chronological order of his works.

Question 16

The total trade for Year 2 and Year 4 is same. If exports of Year 4 are 315 crore dollars, then what are the imports (in crore dollars) of Year 2? ?

Accepted Answer

Total trade equals exports plus imports. By adding Year 4's given exports to its imports from the chart, and equating it to Year 2's total trade, we find Year 2's imports as 318.5.

Question 17

In the following question, select the related word from the given alternatives. Frog : Amphibian : : Lizard : ?

Accepted Answer

Just as a frog belongs to the amphibian class of animals, a lizard belongs to the reptile class. Thus, reptile is the correct answer.

Question 18

A number is greater than 58 times its reciprocal by 3/4. What is the number?

Accepted Answer

Let the number be x. The equation is x - 58/x = 3/4. By checking the options, if x = 8, 8 - 58/8 = 8 - 29/4 = 3/4. Thus, 8 is correct.

Question 19

The salt concentration (measured as salinity in parts per thousand), is less than ______ % in inland waters.

Accepted Answer

Inland waters (freshwater bodies) typically have a salinity of less than 5 parts per thousand (ppt). In contrast, sea water is around 30-35 ppt.

Question 20

Animals in which the cells are arranged in two embryonic layers are called ________.

Accepted Answer

Animals with two embryonic layers (ectoderm and endoderm) are called diploblastic. Examples include sponges and cnidarians. Triploblastic animals have a third layer, the mesoderm.