SSC CGL Undated PYQs

Question 1

What is the percentage increase in number of students of Commerce from 2012 to 2016?

Accepted Answer

Find the difference between the number of Commerce students in 2016 and 2012. Divide this difference by the base year (2012) value and multiply by 100 to get 13.51%.

Question 2

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 1:4 and area of ΔADE is 6 sq cm, what is the ratio of area of ΔADE: area of quadrilateral BDEC?

Accepted Answer

Since DE || BC, ΔADE ~ ΔABC. The ratio of their sides AD:AB is 1:5. The ratio of their areas is (1/5)² = 1/25. Thus, Area(BDEC) is 25 - 1 = 24, making the required ratio 1:24.

Question 3

Sycon (Scypha), Spongilla (Fresh water sponge) and Euspongia (Bath sponge) are examples of which Phylum?

Accepted Answer

Sycon, Spongilla, and Euspongia are all types of sponges. Sponges are pore-bearing multicellular animals that belong exclusively to the phylum Porifera.

Question 4

If a = 73, b = 74 and c = 75, then what is the value of a3 + b3 + c3 – 3abc?

Accepted Answer

Use the formula 1/2(a+b+c)[(a-b)²+(b-c)²+(c-a)²]. The sum (a+b+c) is 222, and the sum of squared differences is 6. Thus, 1/2 × 222 × 6 = 666.

Question 5

The ratio of present ages of Anil and Aakash is 4 : 5. Three years later their ages will be in ratio 7 : 8. What is the present age (in years) of Anil? ?

Accepted Answer

Let their present ages be 4x and 5x. After 3 years, (4x + 3)/(5x + 3) = 7/8. Solving this gives 3x = 3, so x = 1. Anil's present age is 4(1) = 4 years.

Question 6

A train travels 40% faster than a car. Both start from point A at the same time and reach point B, 140 km away at the same time. On the way the train takes 25 minutes for stopping at the stations. What is the speed (in km/hr) of the train?

Accepted Answer

Let car speed be v, so train speed is 1.4v. Time difference: 140/v - 140/1.4v = 25/60 hours. Solving gives 40/v = 5/12, so v = 96. Train speed = 1.4 × 96 = 134.4 km/hr.

Question 7

In the following question, select the missing number from the given series. 2, 5, 17, 71, ?

Accepted Answer

The pattern is ×2+1, ×3+2, ×4+3. So, 2×2+1=5, 5×3+2=17, 17×4+3=71. The next term will be 71×5+4 = 355+4 = 359.

Question 8

Faiyaz's birthday is on Wednesday 12th April. On what day of the week will be Shray's Birthday in the same year if Shray was born on 2nd October?

Accepted Answer

Calculate days from April 12 to Oct 2: 18(Apr) + 31(May) + 30(Jun) + 31(Jul) + 31(Aug) + 30(Sep) + 2(Oct) = 173 days. 173 ÷ 7 leaves remainder 5. Wednesday + 5 = Monday.

Question 9

Select the related letters from the given alternatives. ILN : FIK :: RUW : ?

Accepted Answer

Each letter in the first term is shifted backward by 3 positions to get the second term (I-3=F, L-3=I, N-3=K). Applying the same to RUW gives ORT.

Question 10

Which country won the 2016 Men's Kabaddi World Cup?

Accepted Answer

India won the 2016 Men's Kabaddi World Cup by defeating Iran in the final match held in Ahmedabad. India has historically dominated this international tournament.

Question 11

Arrange the given words in the sequence in which they occur in the dictionary. 1. Yangtze 2. Yakking 3. Yakuzas 4. Yobbery 5. Yobbish 1. Yangtze 2. Yakking 3. Yakuzas 4. Yobbery 5. Yobbish

Accepted Answer

Compare letters alphabetically. 'Yakking' (2) comes first, followed by 'Yakuzas' (3), then 'Yangtze' (1). Between 'Yobbery' (4) and 'Yobbish' (5), 'e' comes before 'i', so 4 precedes 5. Order: 2, 3, 1, 4, 5.

Question 12

Which of the following country is not a member of BRICS association?

Accepted Answer

BRICS is an acronym for five major emerging economies: Brazil, Russia, India, China, and South Africa. Iceland is not a member of this association.

Question 13

Which tax causes a burden on the poorer section of the society?

Accepted Answer

Indirect taxes are levied on goods and services. They are regressive, meaning everyone pays the same amount regardless of income, placing a heavier relative burden on the poorer sections.

Question 14

A and B do (3/5)th part of a work and the rest of the work is completed by C. If A, B and C take the same work for Rs 5000, then what is the share of C (in Rs)?

Accepted Answer

C completes the remaining work, which is 1 - 3/5 = 2/5 of the total work. The share of C is proportional to the work done: (2/5) × 5000 = Rs 2000.

Question 15

The male sex organs in a flower is the __________.

Accepted Answer

The stamen is the male reproductive part of a flower, consisting of an anther (which produces pollen) and a filament. The pistil is the female part.

Question 16

Who invented the electrocardiogram (ECG)?

Accepted Answer

Willem Einthoven invented the first practical electrocardiogram (ECG) in 1903, a device used to record the electrical activity of the heart. He won a Nobel Prize for this.

Question 17

Select the related word from the given alternatives. Office : Colleagues :: Home : ?

Accepted Answer

Just as colleagues are the group of people you associate and work with in an office, family members are the group of people you live with at home.

Question 18

Arrange the given words in the sequence in which they occur in the dictionary. 1. Feeble 2. From 3. Floor 4. Foam 5. Fluorescent 1. Feeble 2. From 3. Floor 4. Foam 5. Fluorescent

Accepted Answer

Compare the letters alphabetically. 'Feeble' comes first (Fe). Next are 'Floor' (Flo) and 'Fluorescent' (Flu). Then 'Foam' (Fo) and finally 'From' (Fr). The correct order is 1, 3, 5, 4, 2.

Question 19

By selling 175 pineapples, the gain is equal to the selling price of 50 pineapples. What is the gain percentage?

Accepted Answer

Let SP of 1 pineapple be 1. Total SP = 175, Gain = 50. So, CP = 175 - 50 = 125. Gain % = (50 / 125) × 100 = 40%.

Question 20

If a - b = 2 and ab = 24, then what is the value of a3 - b3?

Accepted Answer

Use the algebraic identity a3 - b3 = (a - b)3 + 3ab(a - b). Substituting the given values: 2^3 + 3(24)(2) = 8 + 144 = 152.