Staff Selection Commission Multi Tasking Staff Exam
Question : If at compound interest a certain sum becomes 2 times itself in 5 years, then in how many years will it become 8 times itself?
Option 1: 18 years
Option 2: 12 years
Option 3: 20 years
Option 4: 15 years
Correct Answer: 15 years
Solution : Given: The compound interest of a certain sum becomes 2 times itself in 5 years. We know, $\text{Total Amount}=\text{Principal}×(1+\frac{\text{Rate}}{100})^{\text{Time}}$ According to the question, $2P=P[1+\frac{R}{100}]^5$ ⇒ $2=[1+\frac{R}{100}]^5$-------------(1) The number of years it becomes 8 times itself, So, $8P=P[1+\frac{R}{100}]^T$ ⇒ $2^3=[1+\frac{R}{100}]^T$----------------(2) From equation (1) and equation
Question : Find the part of the given sentence that has an error in it. If there is no error, choose 'No error'.
Many female mammals, including rabbits and cats, ovulate only when they mate.
Option 1: No error
Option 2: Many female mammals,
Option 3: only when they mate.
Option 4: including rabbits and cats, ovulate
Correct Answer: No error
Solution : The first option is the correct choice.
The given sentence is grammatically correct. The sentence means that many female mammals, such as rabbits and cats, only undergo ovulation (the release of eggs from the ovaries) when they engage in mating or sexual activity.
Therefore,
Question : The Elephanta Caves are located in which state?
Option 1: Gujarat
Option 2: Rajasthan
Option 3: Maharashtra
Option 4: Karnataka
Correct Answer: Maharashtra
Solution : The correct answer is Maharashtra.
Elephanta Island, sometimes called the Island of Gharapuri, is home to the Elephanta Caves in western India, Maharashtra. The island is made up of two hillocks divided by a small valley. The only reminders of the little island's rich
Question : England lift the ICC Men's T20 World Cup 2022 trophy after beating____________.
Option 1: New Zealand
Option 2: Pakistan
Option 3: Australia
Option 4: India
Correct Answer: Pakistan
Solution : The correct answer is Pakistan.
England clinched victory in the ICC Men's T20 World Cup 2022 by defeating Pakistan in the final, securing the trophy with a five-wicket triumph. In a stellar display, bowlers Sam Curran, Chris Jordan, and Adil Rashid delivered exceptional performances, restricting
Question : Select the most appropriate option to fill in the blank. I was not even ________________ that my friend was ill.
Option 1: alert
Option 2: brave
Option 3: aware
Option 4: cruel
Correct Answer: aware
Solution : The third option is the correct answer.
In this context, "aware" means having knowledge or consciousness of something. The sentence implies that the speaker did not have knowledge of or realisation of their friend's illness.
Therefore, the complete sentence is: I was not even aware
Question : Ramesh is 60% less efficient than Rahul. If Rahul can make a computer in 12 days, then Ramesh can make the same computer in how many days?
Option 1: 30 days
Option 2: 40 days
Option 3: 50 days
Option 4: 60 days
Correct Answer: 30 days
Solution : Given: Ramesh is 60% less efficient than Rahul. Rahul can make a computer in 12 days. Let the efficiency of Rahul be 100. So, the efficiency of Ramesh = (100 – 100 × $\frac{60}{100}$) = 40 Now, the total work = efficiency × time
Question : A shopkeeper sold a book at a marked price of Rs. 1400 at a discount of 28%. Find the selling price of the book.
Option 1: Rs. 2000
Option 2: Rs. 1008
Option 3: Rs. 2500
Option 4: Rs. 1500
Correct Answer: Rs. 1008
Solution : The marked price (MP) = Rs. 1400 Discount = 28% Now, the selling price (SP) = MP × $\frac{(100-\text{discount percentage})}{100}$ = 1400 × $\frac{(100-28)}{100}$ = 1400 × $\frac{72}{100}$ = Rs. 1008 Hence, the correct answer is Rs. 1008.
Question : Directions: Select the option in which the numbers are related in the same way as the numbers in the given set. (11, 23, 47)
Option 1: (17, 35, 69)
Option 2: (13, 27, 54)
Option 3: (19, 39, 79)
Option 4: (23, 46, 93)
Correct Answer: (19, 39, 79)
Solution : Given: (11, 23, 47)
(11, 23, 47)→(11 × 2) + 1 = 22 + 1 = 23; (23 × 2) + 1 = 46 + 1 = 47 Let's check each option – First option: (17, 35, 69)→(17 × 2) + 1 =
Question : Directions: In a certain code language, ABOVE is coded as DERYH. What is the code for BELOW in that code language?
Option 1: EHORZ
Option 2: FHOSY
Option 3: EHPRY
Option 4: EHORY
Correct Answer: EHORZ
Solution : Given: ABOVE is coded as DERYH.
Add 3 to the place value of each letter of ABOVE to obtain the required code – A + 3 = D; B + 3 = E; O + 3 = R; V + 3 = Y; E +
Question : Directions: Select the option in which the numbers are related in the same way as the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (24, 8, 96) (36, 4, 72)
Option 1: (12, 6, 36)
Option 2: (30, 4, 40)
Option 3: (28, 8, 104)
Option 4: (16, 2, 18)
Correct Answer: (12, 6, 36)
Solution : Given: (24, 8, 96); (36, 4, 72)
Like, (24, 8, 96)→(24 × 8) ÷ 2 = 192 ÷ 2 = 96 (36, 4, 72)→(36 × 4) ÷ 2 = 144 ÷ 2 = 72
Let's check each option – First option: (12, 6,
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