Staff Selection Commission Sub Inspector Exam
Question : Directions: Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: I. Some chimpanzees are tigers. II. All tigers are elephants. Conclusions: I. Some elephants are tigers. II. Some elephants are chimpanzees.
Option 1: Neither conclusion I nor II follows
Option 2: Only conclusion I follows
Option 3: Both conclusions I and II follow
Option 4: Only conclusion II follows
Correct Answer: Both conclusions I and II follow
Solution : The possible Venn diagram according to the given statements is as follows –
Let's analyze the conclusions – Conclusion (I): Some elephants are tigers – From the Venn diagram, the circle of a tiger is completely inside the circle of
Question : The given histogram shows the frequency distribution of the speed of cars passing through at a particular spot on a highway. Study the graph and answer the question that follows.
The number of cars with speeds between 70 km/h and 80 km/h is what percentage more than the number of cars with speeds between 50 km/h and 60 km/h? (correct to one decimal place)
Option 1: 22.2 %
Option 2: 15.5 %
Option 3: 28.6 %
Option 4: 29.7 %
Correct Answer: 28.6 %
Solution : According to the question Number of cars in 70 - 80 km/h range(A) = 90 Number of cars in 50 - 60 km /h range(B) = 70 Use: A is more than B in percentage = $\frac{(A- B)}{B}$×100 ⇒ Required percentage = $\frac{90 -
Question : Directions: In the following question a series is given, with one or more number(s) missing. Choose the correct alternative from the given ones that will complete the series. ?, 5, 30, 186, 1309, 10480
Option 1: 0.25
Option 2: 0.75
Option 3: 1.00
Option 4: 0
Correct Answer: 0.25
Solution : Given: ?, 5, 30, 186, 1309, 10480
Multiply and add the sequential natural numbers to the previous term of the series – (5 × 5) + 5 = 25 + 5 = 30 (30 × 6) + 6 = 180 + 6 = 186 (186
Question : Directions: A father's age is one more than 5 times his son's age. After 3 years, the father's age would be 2 less than four times the son's age. Find the present age of the father.
Option 1: 30 years
Option 2: 40 years
Option 3: 31 years
Option 4: 29 years
Correct Answer: 31 years
Solution : Let the present age of the father and son be F and S years respectively.
The father's present age is 1 more than 5 times his son's age ⇒ F = (5 × S) + 1 Father's age after 3 years = (5 ×
Question : Study the bar graph and answer the question. In how many years was the number of trees planted in state B more than the average number of trees planted in state A over the years?
Option 1: 1
Option 2: 3
Option 3: 4
Option 4: 2
Correct Answer: 3
Solution : Use the formula, $\text{Average} = \frac{\text{The sum of all values}}{\text{The total number of the values}}$. The average number of trees planted in state A over the years $=\frac{70+90+78+92+100}{5}=\frac{430}{5}=86$ There are 3 years in 2015, 2016, and 2018 in which the number of trees planted in
Question : Directions: In the following question, which of the answer figures is exactly the mirror image of the given figure when the mirror is held at XY?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : As per the mirror image properties, closer things appear close to the mirror in the reflection. So, according to the above property and the information provided, the mirror is placed on the right side of the figure (on line XY). So, the left side of the
Question : Which of the following sites is the largest protected wetland in India?
Option 1: Pulicat Lake
Option 2: Vembanad-Kol
Option 3: Upper Ganga River
Option 4: Sundarbans
Correct Answer: Sundarbans
Solution : The correct answer is Sundarbans.
A wetland is an area of land that is either covered by water or saturated with water. Sundarbans is the largest protected wetland in India. Sundarbans is a Mangrove area formed in the Bay of Bengal, and there are more
Question : Directions: Select the option figure in which the given figure is embedded (Rotation is NOT allowed).
Solution : Since the rotation is restricted. So, the embedded figure will have the same orientation as the main figure. By comparison of all the option figures, the given question figure is embedded only in the fourth option figure.
Hence, the fourth option is correct.
Question : Directions: Select the related letter cluster from the given alternatives. GAYATRI : AAR :: PALLAVI : ?
Option 1: ALI
Option 2: AAL
Option 3: ALA
Option 4: ALV
Correct Answer: ALV
Solution : Given: GAYATRI : AAR :: PALLAVI : ?
If we take every other letter of the word GAYATRI, we get the sequence AAR. (GAYATRI) Thus, GAYATRI is coded as AAR. Similarly, if we take every other letter of the
Question : Directions: The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/are followed in all the number pairs, except one. Find that odd number pair.
Option 1: (1826, 1472)
Option 2: (1984, 1505)
Option 3: (1805, 1326)
Option 4: (2136, 1657)
Correct Answer: (1826, 1472)
Solution : Let's check the options – First option: (1826, 1472); 1826 – 1472 = 354 Second option: (1984, 1505); 1984 – 1505 = 479 Third option: (1805, 1326); 1805 – 1326 = 479 Fourth option: (2136, 1657); 2136 – 1657 = 479
So, only the
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