Staff Selection Commission Multi Tasking Staff Exam
Question : Directions: Which two numbers should be interchanged to make the given equation correct? 15 – 24 + 63 ÷ 7 × 2 = 9
Option 1: 63 and 9
Option 2: 7 and 63
Option 3: 24 and 9
Option 4: 63 and 24
Correct Answer: 24 and 9
Solution : Given: 15 – 24 + 63 ÷ 7 × 2 = 9
According to the given options interchange the numbers. First option: 63 and 9 15 – 24 + 63 ÷ 7 × 2 = 9 Solving the L.H.S. of the equation –
Question : Water from the soil enters into the root hairs owing to:
Option 1: atmospheric pressure
Option 2: capillary pressure
Option 3: root pressure
Option 4: osmotic pressure
Correct Answer: osmotic pressure
Solution : The correct option is osmotic pressure.
Plants root hairs get water from the soil through a process known as "osmosis." The pressure applied through this process is the osmotic pressure. Osmosis is the process by which water molecules pass across a semi-permeable membrane
Question : Directions: In the following question, a series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. AEI, BFJ, CGK, ?
Option 1: DHL
Option 2: DLH
Option 3: EIM
Option 4: LPT
Correct Answer: DHL
Solution : Given: AEI, BFJ, CGK, ?
In the above-given series, add 1 to the place value of each letter of the previous term to get the next term. AEI→A + 1 = B; E + 1 = F; I + 1 = J BFJ→B + 1
Question : Comprehension: In the following passage, some of the words have been deleted. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. Gaming in the banking sector seems virtually (1) _____ to eliminate. The only effective measure to end it would be to (2) _____ bankers personally liable for losses, to remove the sense that their actions—their games—have (3) ______ personal financial or legal consequences. It is this, rather (4) ______ removing the cap on bankers' bonuses, that has the best chance of preventing the financial system from blowing (5) ____ again. Question: Select the most appropriate option to fill in the blank number 4.
Option 1: then
Option 2: but
Option 3: so
Option 4: than
Correct Answer: than
Solution : The fourth option is the correct choice.
The phrase rather than is used to express a preference or choice between two alternatives. In this context, the passage indicates a preference for making bankers personally liable for losses over removing the cap on bankers' bonuses, using
Question : The sum of 11 numbers is 660. Find their average.
Option 1: 66
Option 2: 60
Option 3: 10
Option 4: 80
Correct Answer: 60
Solution : Given: The sum of 11 numbers is 660. Use the formula, $\text{Average}=\frac{\text{Sum of values}}{\text{The total values}}=\frac{660}{11}=60$ Hence, the correct answer is 60.
Question : Directions: Which two signs need to be interchanged to make the following equation correct? 2 + 78 ÷ 13 – 4 × 111 = 119
Option 1: + and ÷
Option 2: ÷ and ×
Option 3: + and –
Option 4: + and ×
Correct Answer: + and ×
Solution : Given: 2 + 78 ÷ 13 – 4 × 111 = 119
Let's check each option – First Option: + and ÷ On interchanging the mathematical signs, we get – 2 ÷ 78 + 13 – 4 × 111 = 119 On solving
Question : Rainfall is measured by an instrument called the ________.
Option 1: rain gauge
Option 2: rain catcher
Option 3: rain calculator
Option 4: precipitator
Correct Answer: rain gauge
Solution : The correct option is a rain gauge.
A rain gauge is a meteorological device that records and quantifies the total amount of precipitation, or rainfall, over a given time frame. While rain gauges come in a variety of forms, they are all used
Question : The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.
She didn’t knew / that I was out / for some urgent work.
Option 1: for some urgent work
Option 2: No error
Option 3: that I was out
Option 4: She didn’t knew
Correct Answer: She didn’t knew
Solution : The error lies in the fourth option.
Explanation: The verb didn't is a contraction of did not, and after modal verbs or auxiliaries, we use the base form of the verb. In this case, know is the base form, so the correct construction
Question : A sum becomes INR 12960 in 2 years at the rate of 4% per annum on simple interest. What is the sum?
Option 1: INR 10000
Option 2: INR 12200
Option 3: INR 12000
Option 4: INR 11600
Correct Answer: INR 12000
Solution : Amount = INR 12960 Term, $n$ = 2 years Rate, $R$ = 4% Let $P$ be the principal sum. Simple interest = $12960 - P$ We know, Simple interest = $\frac{\text{Principal × Time × Rate}}{100}$ $⇒12960-P = \frac{P×2×4}{100}$ $⇒12960 = P + \frac{8P}{100}$ $\therefore
Question : Find the mean proportion of 64 and 144.
Option 1: 8
Option 2: 108
Option 3: 12
Option 4: 96
Correct Answer: 96
Solution : The mean proportion of two numbers, $a$ and $b$ is $\sqrt{ab}$. The mean proportion of 64 and 144 $=\sqrt{64 \times 144} = 96$ Hence, the correct answer is 96.
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