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37 Views

Question : The salary of Amit is 75% of the salary of Aman. The salary of Amit increases by 40% and the salary of Aman increases by 10%. By what approximate percentage is the new salary of Aman more than the new salary of Amit?

Option 1: 6.2%

Option 2: 9.6%

Option 3: 5.5%

Option 4: 4.8%

Team Careers360 20th Jan, 2024

Correct Answer: 4.8%


Solution : Given: The salary of Amit is 75% of the salary of Aman. The salary of Amit increases by 40% and the salary of Aman increases by 10%.
Let Aman's original salary as 100
So, Amit's original salary = 100 × $\frac{75}{100}$ = 75 
After the

19 Views

Question : If $x=\operatorname{cosec \theta}-\sin\theta$ and $y=\sec\theta-\cos\theta$, then the relation between $x$ and $y$ is:

Option 1: $x^{2}+y^{2}+3=1$

Option 2: $x^{2}y^{2}\left ( x^{2}+y^{2}+3 \right )=1$

Option 3: $x^{2}\left ( x^{2}+y^{2}-5 \right )=1$

Option 4: $y^{2}\left ( x^{2}+y^{2}-5 \right )=1$

Team Careers360 25th Jan, 2024

Correct Answer: $x^{2}y^{2}\left ( x^{2}+y^{2}+3 \right )=1$


Solution : $x=\operatorname{cosec \theta}-\sin\theta$
⇒ $x=\frac{1}{\sin\theta}-\sin\theta=\frac{1-\sin^2\theta} {\sin\theta}=\frac{\cos^2\theta}{\sin\theta}$
Also, $x^2=(\frac{\cos^2\theta}{\sin\theta})^2$_____ (i)
$y=\sec\theta-\cos\theta$
⇒ $y=\frac{1}{\cos\theta}-\cos\theta=\frac{1-\cos^2\theta}{\cos\theta}=\frac{\sin^2\theta}{\cos\theta}$
⇒ $y^2=(\frac{\sin^2\theta}{\cos\theta})^2$_____ (ii)
So, $x^2+y^2=(\frac{\cos^2\theta}{\sin\theta})^2+(\frac{\sin^2\theta}{\cos\theta})^2$
⇒ $x^2+y^2=\frac{\cos^4\theta}{\sin^2\theta}+\frac{\sin^4\theta}{\cos^2\theta}$
⇒ $x^2+y^2=\frac{\cos^6\theta+\sin^6\theta}{\sin^2\theta\cos^2\theta}$
Add 3 to both sides, we get,
⇒ $x^2+y^2+3=\frac{\cos^6\theta+\sin^6\theta}{\sin^2\theta\cos^2\theta}+3$
⇒ $x^2+y^2+3=\frac{\cos^6\theta+\sin^6\theta+3\sin^2\theta\cos^2\theta(\sin^2\theta+\cos^2\theta)}{\sin^2\theta\cos^2\theta}$
⇒ $x^2+y^2+3=\frac{(\cos^2\theta+\sin^2\theta)^3}{\sin^2\theta\cos^2\theta}$
⇒ $x^2+y^2+3=\frac{1}{\sin^2\theta\cos^2\theta}$
⇒ $x^2+y^2+3=\frac{\sin^2\theta\cos^2\theta}{\sin^4\theta\cos^4\theta}$
⇒ $x^2+y^2+3=\frac{1}{(\frac{\cos^2\theta}{\sin\theta})^2×(\frac{\sin^2\theta}{\cos\theta})^2}$
From equation

21 Views

Question : Disguised unemployment in India is mainly related to:

Option 1: agricultural sector

Option 2: rural area

Option 3: factory sector

Option 4: urban area

Team Careers360 19th Jan, 2024

Correct Answer: agricultural sector


Solution : The correct answer is the agricultural sector.

Agriculture is the primary source of disguised unemployment in India. Agriculture employs the most people in India, accounting for more than half of the total. However, agricultural production is low, and there is an excess of

10 Views

Question : If $(a+b+c)=14$ and $\left(a^3+b^3+c^3-3 a b c\right)=98$, find the value of $(ab+bc+ca)$.

Option 1: 60

Option 2: 64

Option 3: 65

Option 4: 63

Team Careers360 24th Jan, 2024

Correct Answer: 63


Solution : Given that:
$a + b + c = 14$ and $a^3 + b^3 + c^3 - 3abc = 98$
We have to find the value of $ab +bc +ca$
We know that,
$a^3 + b^3+ c^3 - 3abc = 98$
⇒ $(a^2+ b^2+ c^2 -

14 Views

Question : Chlorine gas is a major component of which of the following?

Option 1: Water

Option 2: Tear gas

Option 3: Liquefied petroleum gas

Option 4: Gobar gas

Team Careers360 23rd Jan, 2024

Correct Answer: Tear gas


Solution : The correct option is Tear gas.

Chlorine is a prominent component of tear gas, which is normally composed of a variety of chemicals, one of which is chloroacetophenone (CN) or chlorobenzalmalononitrile (CS), both of which decompose and create chlorine gas. Tear gas can

9 Views

Question : Directions: Select the figure that will replace the question mark (?) in the following figure series.

Option 1:

Option 2:

Option 3:

Option 4:

Team Careers360 23rd Jan, 2024

Correct Answer:


Solution : According to the given figure series –
1. The triangle inside the pentagon moves from top left to top right, then again from top right to top left, and so on.
2. The rectangle inside the pentagon moves from bottom right to bottom left, then again

12 Views

Question : Directions: If A means +, B means ×, C means ÷, and D means –, then the value of the given equation will be 9 A 2 B 6 D 4 C 2 = ?

Option 1: 16

Option 2: 19

Option 3: 27

Option 4: 30

Team Careers360 24th Jan, 2024

Correct Answer: 19


Solution : Given:
9 A 2 B 6 D 4 C 2 = ?

After replacing the letters with mathematical signs, the equation becomes –
= 9 + 2 × 6 – 4 ÷ 2
= 9 + 2 × 6 – 2
= 9 + 12

34 Views

Question : A man covers half part of a certain distance at 60 km/hr. He covers 40% of the remaining distance at the speed of 12 km/hr and covers the rest of the distance at the speed of 18 km/hr. What is his average speed for the entire journey?

Option 1: 24 km/hr

Option 2: $\frac{58}{3}$ km/hr

Option 3: 36 km/hr

Option 4: 40 km/hr

Team Careers360 24th Jan, 2024

Correct Answer: 24 km/hr


Solution : Let the total distance be 100 km.
Half distance = $\frac{100}{2}$ = 50 km
Speed = 60 km/hr
Time taken to cover half the distance = $\frac{50}{60}$ = $\frac{5}{6}$
Remaining distance = 50 km
Distance = 40% of the remaining distance = $\frac{40}{100}×50$ =

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