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Staff Selection Commission Combined Higher Secondary Level Exam

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Question : If $\sin m+\sin n=p, \cos m+\cos n=q$, then find the value of $\sin m \times \sin n+\cos m \times \cos n$.

Option 1: $p^2+q^2-2$

Option 2: $\frac{p^2+q^2-2}{2}$

Option 3: $p+q-p q$

Option 4: $p+q+p q$

Team Careers360 18th Jan, 2024

Correct Answer: $\frac{p^2+q^2-2}{2}$


Solution : Given,
$\sin m+\sin n=p$ and $ \cos m+\cos n=q$
Consider, $\sin m + \sin n = p$
Squaring both sides,
⇒ $(\sin m + \sin n)^2 = p^2$
⇒ $\sin^2m+\sin^2n+2\sin m\sin n=p^2$
We know, $\sin^2x+\cos^2x=1$
⇒ $1 - \cos^2 m + 1 - \cos^2 n

22 Views

Question : If $\triangle ABC$~$\triangle PQR$, the ratio of perimeter of $\triangle ABC$ to perimeter of $\triangle PQR$ is 36 : 23 and QR = 3.8 cm, then the length of BC is:

Option 1: $4 \frac{103}{121} cm$

Option 2: $3 \frac{109}{121} cm$

Option 3: $5 \frac{109}{115} cm$

Option 4: $3 \frac{107}{115} cm$

Team Careers360 23rd Jan, 2024

Correct Answer: $5 \frac{109}{115} cm$


Solution : $\triangle ABC$~$\triangle PQR$
$\frac{BC}{QR}$ = $\frac{Perimeter(\triangle ABC)}{Perimeter(\triangle PQR)}$
$\frac{BC}{3.8}$ = $\frac{36}{23}$
BC = $\frac{36×38}{230}$
= $ \frac{684}{115}$
= $5 \frac{109}{115}$ cm
Hence, the correct answer is $5 \frac{109}{115}$ cm.

13 Views

Question : Name the river which is a reason for the dispute between India and Bangladesh?

Option 1: Teesta

Option 2: Brahmaputra

Option 3: Ganga

Option 4: None of the above

Team Careers360 18th Jan, 2024

Correct Answer: Teesta


Solution : The correct option is Teesta.

The Teesta River water-sharing dispute has been a point of contention between Bangladesh and India. The Teesta River is a significant River for both India and Bangladesh. It drains 2800 sq. km of Bangladesh and almost fills the floodplains

18 Views

Question : Which type of emergency has been imposed only one time in India so far?

Option 1: Internal Emergency 

Option 2: State Emergency

Option 3: External Emergency 

Option 4: Financial Emergency

Team Careers360 16th Jan, 2024

Correct Answer: Internal Emergency 


Solution : The correct option is Internal Emergency.

The "Internal Emergency" or "State of Emergency," which was announced in 1975, was the only type of national emergency to be enforced in India just once. It was declared by the prime minister at the time, Indira Gandhi,

26 Views

Question : A seller allows a discount of 9% on a watch. If he allows a discount of 6%, he earns Rs. 30 more in profit. What is the marked price?

Option 1: Rs. 900

Option 2: Rs. 1,400

Option 3: Rs. 1,000

Option 4: Rs. 1,300

Team Careers360 14th Jan, 2024

Correct Answer: Rs. 1,000


Solution : Given:
Discount of 9% on a watch.
A discount of 6% yields Rs. 30 more profit.
We know,
Marked price = $\frac{\text{Selling price}}{(1 - \frac{\text{Discount %}}{100})}$
Let marked price = $x$
⇒ Difference in selling price with 9% and 6% discount = Rs. 30

45 Views

Question : Select the most appropriate homonym to fill in the blank.

Should we go shopping for a_________ fan for our new house?

Option 1: ceiling

Option 2: sealink

Option 3: sealing

Option 4: selling

Team Careers360 22nd Jan, 2024

Correct Answer: ceiling


Solution : The first option is the correct answer.

A ceiling fan is a common household item designed to circulate air in a room and is installed on the upper interior surface of a room.

The meanings of the other options are as follows:

  • Sealink is a
155 Views

Question : Comprehension:

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Unemployment arises from a variety of_____ (1). One which is always recurring and the effects of which we have had a recent example is the disorganisation of the industry resulting from a long war, this is a serious______ (2) admitting of no easy ________(3) at the best of times. Again there is unemployment which followed a marked diminution in the______ (4) of any raw product, such as cotton; fewer hands are required in the mills and the factories. We may call this the cause of bad harvests. Similar, but more serious is the effect of changes in industry due to the invention of machinery which does more work and requires________ (5) hands. Yet another cause is strike or lockout and this is more to be deplored because such a stoppage is due to a very trivial matter, perhaps the men are working half an hour longer than what their Union permits.

Select the most appropriate option to fill in the blank number 1.

Option 1: causes

Option 2: thoughts

Option 3: things

Option 4: types

Team Careers360 22nd Jan, 2024

Correct Answer: causes


Solution : The correct choice is the first option.

In the context of the passage, the word causes logically fits in the blank. The sentence discusses various reasons or factors leading to unemployment, and causes is the appropriate term to express this idea. The sentence structure requires

261 Views

Question : Two jars A and B contain the solutions of two liquids P and Q. The ratio of the liquids P and Q in jars A and B are 2 : 19 and 1:11, respectively. If 7 litres of the solution of jar A and 4 litres of the solution of jar B are mixed, what is the ratio of the solutions P and Q in the new mixture?

Option 1: 10 : 1

Option 2: 1 : 9

Option 3: 9 : 1

Option 4: 1 : 10

Team Careers360 21st Jan, 2024

Correct Answer: 1 : 10


Solution :

The ratio in the mixture   Amount of P Amount of Q
7 A (2 : 19) $\frac{2}{21}\times7$ $\frac{19}{21}\times7$
4 B (1 : 11) $\frac{1}{12}\times4$ $\frac{11}{12}\times4$

⇒ $P:Q=(\frac{2}{21}\times7+\frac{1}{12}\times4):(\frac{19}{21}\times7+\frac{11}{12}\times4)$
⇒ $P:Q=(\frac{2}{3}+\frac{1}{3}):(\frac{19}{3}+\frac{11}{3})$
⇒ $P:Q=\frac{2+1}{3}:\frac{19+11}{3}$
$\therefore P: Q=3:30=1:10$
Hence, the correct answer is 1 : 10.

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