Staff Selection Commission Sub Inspector Exam
Question : Directions: Which two signs should be interchanged to make the given equation correct? 13 + 145 ÷ 29 × 52 – 11 = 106
Option 1: – and ×
Option 2: × and +
Option 3: ÷ and –
Option 4: ÷ and +
Correct Answer: × and +
Solution : Given: 13 + 145 ÷ 29 × 52 – 11 = 106
Let's check the options – First option: – and × 13 + 145 ÷ 29 – 52 × 11 = 106 On solving the L.H.S. of the given equation – =
Question : If the sum of two quantities is equal to three times their difference, then the ratio of the two quantities is:
Option 1: 1 : 3
Option 2: 3 : 1
Option 3: 2 : 1
Option 4: 2 : 3
Correct Answer: 2 : 1
Solution : Let the numbers be $x$ and $y$. The sum of the number is $x + y$. Three times the difference be $3(x-y)$. According to the given conditions, $x + y = 3 (x - y)$ $⇒ x + y = 3x - 3y$
Question : A hostel mess requires 217 eggs for a week. How many eggs will it require in total for the months of July, August and September?
Option 1: 2821
Option 2: 2883
Option 3: 2852
Option 4: 2790
Correct Answer: 2852
Solution : The months of July, August, and September have 31, 31, and 30 days respectively. That's a total of 92 days. Since a week has 7 days, the total number of weeks in these three months is $\frac{92}{7}$ weeks. Therefore, the hostel mess will require 217
Question : If the difference between the compound interest and simple interest at 17% on a sum of money for 2 years (compounded annually) is INR 433.50, then the sum (in INR) is:
Option 1: 15,000
Option 2: 25,000
Option 3: 20,000
Option 4: 12,000
Correct Answer: 15,000
Solution : Difference between Compound Interest and Simple Interest for 2 years = $\frac{PR^{2}}{100^{2}}$ where $R$ is the rate of interest per annum compounded annually and $P$ is principal. ⇒ 433.50 = $P × \frac{17}{100}$ × $\frac{17}{100}$ ⇒ 43350 × 100 = $P$ × 289 ⇒ $P$
Question : Directions: In a row of children, Ravi is fourth from right and Sham is second from left. When they interchange positions, Ravi is ninth from right. What will be Sham's position from the left?
Option 1: Fifth
Option 2: Sixth
Option 3: Seventh
Option 4: Eighth
Correct Answer: Seventh
Solution : Given: Ravi is fourth from right and Sham is second from left. When they interchange positions, Ravi is ninth from right. After interchanging Ravi is ninth from right. So, the total number of students in the row = 9 + 1 = 10 Sham’s new
Question : Directions: It took 20 days for all the leaves of a tree to fall. If the number of leaves that fell each day was twice that of the previous day, on which day would the tree be half bare?
Option 1: 10th day
Option 2: 11th day
Option 3: 40th day
Option 4: 19th day
Correct Answer: 19th day
Solution : Let the total number of leaves on the tree be A.
The number of leaves that fell each day = 2 × (the number of leaves that fell on the previous day)
On the 20th day, all leaves fell. The number of leaves fell
Question : Comprehension: In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
Let us take a brief look at the planet (1)______ which we live. As the earth hurtles through space at a (2)______ of 70, 000 miles per hour, it spins, as we all know, on its axis, (3)______ causes it to be flattened at the poles. Thus, if you (4)______ to stand at the North or South Pole, you would be 13 miles nearer the centre of the earth (5)______ if you stood on the Equator. Question
Select the most appropriate option to fill in the blank no. 2.
Option 1: force
Option 2: distance
Option 3: speed
Option 4: mass
Correct Answer: speed
Solution : The third option is the correct answer.
The sentence is describing the Earth's motion through space, indicating that it moves at a certain rate or pace. The word "speed" fits in this context to convey the rate at which the Earth is moving, which is
Question : A sum of money amounts to INR 1,200 in 2 years and becomes INR 1,260 in 3 years at compound interest when interest is compounded annually. What is the rate of compound interest per annum?
Option 1: 5%
Option 2: 3%
Option 3: 4%
Option 4: 6%
Correct Answer: 5%
Solution : Let the rate of interest per annum as \( R \) Given: After 2 years, the amount is INR 1,200 After 3 years, the amount is INR 1,260 So, interest during the third year = interest on the amount of the second year ⇒ 1260
Question : Identify the correct statement about gravity.
Option 1: The unit of g is the same as that of velocity.
Option 2: The unit of g is the same as that of friction.
Option 3: The unit of g is the same as that of mass.
Option 4: The unit of g is the same as that of acceleration.
Correct Answer: The unit of g is the same as that of acceleration.
Solution : The correct option is The unit of g is the same as that of acceleration.
In the context of gravity, "g" typically represents the acceleration due to gravity. The standard unit for acceleration in
Question : Directions: Which number will replace the question mark (?) in the following number series? 52, 42, 34, 28,?
Option 1: 24
Option 2: 22
Option 3: 26
Option 4: 28
Correct Answer: 24
Solution : Given: 52, 42, 34, 28,?
Subtract even numbers starting from 10 in decreasing order, to get the required missing number – 52 – 10 = 42; 42 – 8 = 34; 34 – 6 = 28; 28 – 4 = 24
So, 24 is the
The Question containing Inaapropriate or Abusive Words
Question lacks the basic details making it difficult to answer
Topic Tagged to the Question are not relevant to Question
Question drives traffic to external sites for promotional or commercial purposes
The Question is not relevant to User
And never miss an important update
