Staff Selection Commission Multi Tasking Staff Exam
Question : The average weight of six persons is 30 kg. If a new person joins this group, then the average weight becomes 28 kg. What is the weight of the new person?
Option 1: 22 kg
Option 2: 14 kg
Option 3: 15 kg
Option 4: 16 kg
Correct Answer: 16 kg
Solution : The average weight of 6 persons = 30 kg So, the sum of the weights of 6 persons = 30 × 6 = 180 kg When a new person joins this group, then the average weight = 28 kg The sum of the weights
Question : Directions: A square piece of paper is cut at the edges as shown and folded as shown below. How would the folded pattern look.
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given unfolded paper is folded, it will look like –
Hence, the fourth option is correct.
Question : Directions: Select the correct mirror image of the given figure when the mirror MN is placed on the right side of the figure.
Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection. According to the information provided, the mirror is placed on the right side of the figure (on line MN). So, the left side of the reflected image will appear as
Question : Choose the word that can substitute the given group of words.
Disease that spreads over a whole country or the whole world
Option 1: Pandemic
Option 2: Rustic
Option 3: Panacea
Option 4: Epidermis
Correct Answer: Pandemic
Solution : The correct choice is the first option.
Explanation:
The term pandemic is a noun that refers to a disease prevalent over an entire country or the whole world. In the context provided, it accurately captures the meaning of a disease that has spread
Question : Directions: Two Statements are given followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements Statements: All tables are strong No strong is weak. Conclusions: I. No table is weak. II. Some weak are tables.
Option 1: Neither conclusion I nor II follows
Option 2: Only conclusion II follows
Option 3: Both conclusions I and II follow
Option 4: Only conclusion I follows
Correct Answer: Only conclusion I follows
Solution : The possible Venn diagram according to the given statement is as follows –
Let's analyse the conclusions – Conclusion (I): No table is weak – From the Venn diagram, it is evident that all tables are strong and no strong is weak.
Question : If the rate of interest is 4% for the first year, 5% for the second year and 6% for the third year, then find the compound interest on Rs. 10,000 for 3 years, if interest is compounded annually.
Option 1: Rs. 1,580.25
Option 2: Rs. 1,575.20
Option 3: Rs. 1,500.00
Option 4: Rs. 1,570.50
Correct Answer: Rs. 1,575.20
Solution : The formula for compound interest (CI) when the rate of interest is different for different years is, CI = P × (1 + R1) × (1 + R2) × (1 + R3) – P where P is the
Question : What is the value of $\frac{(45 \times 3 \div 27 \times 4)(81 \div 5 \times 85 \div 51)}{(108 \div 18 \times 7\div21)(133 \times 3 \div 38 \times 4)} ?$
Option 1: $\frac{46}{7}$
Option 2: $\frac{45}{7}$
Option 3: $\frac{54}{7}$
Option 4: $\frac{39}{7}$
Correct Answer: $\frac{45}{7}$
Solution : $\frac{(45 \times 3 \div 27 \times 4)(81 \div 5 \times 85 \div 51)}{(108 \div 18 \times 7\div 21)(133 \times 3 \div 38 \times 4)}$ $=\frac{(45 \times \frac{3}{27} \times 4)(\frac{81}{5} \times \frac{85}{51})}{(\frac{108}{18 }\times \frac{7}{21})(133 \times \frac{3}{38} \times 4)}$ $=\frac{(45 \times \frac{1}{9} \times 4)(\frac{81}{5} \times \frac{5}{3})}{(2)(133 \times
Question : Some carpenters promised to complete the work in 20 days. When the work was started, 8 of them were absent and the remaining completed the work in 40 days. What was the original number of carpenters?
Option 1: 18
Option 2: 12
Option 3: 10
Option 4: 16
Correct Answer: 16
Solution : Number of days promised, $D_1$ = 20 days Number of days taken to complete the work, $D_2$ = 40 Let the number of carpenters($M_1$) be $x$ Absent carpenters = 8 Remaining carpenters($M_2$) = $(x-8)$ We know that, $M_1D_1= M_2D_2$ ⇒ $x\times20=(x-8)\times40$ ⇒ $20x=40x-320$ ⇒ $20x=320$
Question : Select the most appropriate option to fill in the blank. My friends, being incredibly nerdy linguists, ___________to make fun of the syntax.
Option 1: braided
Option 2: decided
Option 3: stalked
Option 4: traded
Correct Answer: decided
Solution : The correct option is the second option.
Decided means they made a choice or came to a conclusion. In this context, it implies that the nerdy linguists reached a decision or agreement about something related to making fun of the syntax, perhaps deciding on a
Question : 15 books were sold for Rs. 2200 thereby gaining a cost price of 5 books. Find the cost price of a book:
Option 1: Rs. 110
Option 2: Rs. 200
Option 3: Rs. 210
Option 4: Rs. 230
Correct Answer: Rs. 110
Solution : Let the cost price of a book be $x$. Selling price of 15 books = Rs. 2200 Price includes the cost price of 15 books plus the gain, which is the cost price of 5 books. According to the question, $15x + 5x =
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