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16 Views

Question : $\triangle ABC$ is an isosceles triangle with AB = AC = 15 cm and an altitude from A to BC of 12 cm. The length of side BC is:

Option 1: 9 cm

Option 2: 12 cm

Option 3: 18 cm

Option 4: 20 cm

Team Careers360 23rd Jan, 2024

Correct Answer: 18 cm


Solution :
Given: $\triangle ABC$ is an isosceles triangle with $AB = AC = 15$ cm.
$AD \perp BC$ 
So, $AD = 12$ cm.
Also, $BD = DC$.
Using Pythagoras theorem in $\triangle ABD$,
$(BD)^2=(AB)^2–(AD)^2$
$⇒BD=\sqrt{(AB)^2–(AD)^2}$
$⇒BD=\sqrt{(15)^2–(12)^2}$
$⇒BD=\sqrt{(15–12)(15+12)}$
$⇒BD=\sqrt{3\times27}$
$⇒BD=9$ cm
$BC = 2 \times BD

9 Views

Question : In what ratio sugar of Rs. 30 per kg should be mixed with sugar of Rs. 40 per kg so that the mixture is worth Rs. 37 per kg?

Option 1: 8 : 9

Option 2: 3 : 7

Option 3: 4 : 3

Option 4: 9 : 5

Team Careers360 24th Jan, 2024

Correct Answer: 3 : 7


Solution : Let's assume that the ratio in which the two types of sugar are mixed is $x:y$
The cost of sugar of Rs. 30 per kg is 30$x$
The cost of sugar of Rs. 40 per kg is 40$y$
The mixture is worth Rs.

26 Views

Question : Which of the following equations has equal roots?

Option 1: $3x^{2}-6x+2=0$

Option 2: $3x^{2}-6x+3=0$

Option 3: $x^{2}-8x+8=0$

Option 4: $4x^{2}-8x+2=0$

Team Careers360 25th Jan, 2024

Correct Answer: $3x^{2}-6x+3=0$


Solution : An equation has equal roots if its discriminant is zero. The discriminant of a quadratic equation $ax^{2}+bx+c=0$ is given by $b^{2}-4ac$.
Option (i):
$3x^{2}-6x+2=0$
So, $D=(-6)^{2}-4×3×2=36-24$
$\therefore D=12$ > 0
Option (ii):
$3x^{2}-6x+3=0$
So, $D=(-6)^{2}-4×3×3=36-36$
$\therefore D=0$
Option (iii):
$x^{2}-8x+8=0$
So, $D=(-8)^{2}-4×1×8=64-32$
$\therefore D=32$ >

18 Views

Question : ______ has become the 65th Indian Grandmaster at the age of 13.

Option 1: Prithu Gupta

Option 2: Raunak Sadhwani

Option 3: Rahul Vaid

Option 4: R. Praggnanandhaa

Team Careers360 23rd Jan, 2024

Correct Answer: Raunak Sadhwani


Solution : The correct answer is Raunak Sadhwani.

Raunak Sadhwani became the 65th Indian Grandmaster at the age of 13 years. The Grandmaster is the title award for the chess player by the world chess organisation FIDE (Federation Internationale des Echecs or International Chess Federation). 

30 Views

Question : What did John Boyd Dunlop invent?

Option 1: Pneumatic rubber tyre

Option 2: Car music system

Option 3: Steering wheel

Option 4: Diesel engine

Team Careers360 24th Jan, 2024

Correct Answer: Pneumatic rubber tyre


Solution : The correct option is a Pneumatic rubber tyre.

The pneumatic rubber tyre is said to have been invented by John Boyd Dunlop. Dunlop invented the first workable pneumatic tyre for bicycles in 1887. He placed an air-filled rubber tube around a bicycle

11 Views

Question : In $\Delta ABC$ the straight line parallel to the side $BC$ meets $AB$ and $AC$ at the point $P$ and $Q,$ respectively. If $AP=QC$, the length of $AB$ is $\operatorname{12 units}$ and the length of $AQ$ is $\operatorname{2 units}$, then the length (in units) of $CQ$ is:

Option 1: $4$

Option 2: $6$

Option 3: $8$

Option 4: $10$

Team Careers360 25th Jan, 2024

Correct Answer: $4$


Solution :

Given that $AP=QC$, $AB=\operatorname{12 units}$ and $AQ=\operatorname{2 units}$
Let $AP=QC=x\operatorname{ units}$
Since $PQ$ is parallel to $BC$, then,
$\Delta ABC\sim\Delta APQ$
Since the triangles are similar, the ratios of their corresponding sides are equal.
$\frac{AP}{AB}=\frac{AQ}{AC}$
⇒ $\frac{x}{12}=\frac{2}{2+x}$
⇒ $2x+x^2=24$
⇒ $x^2+2x-24=0$
⇒ $(x+6)(x-4)=0$
⇒ $x=4$

12 Views

Question : The following pie chart shows the percentage distribution of the expenditure incurred in publishing a book.
Expenditure

Find the paper cost, if the royalty is INR 22,500.

Option 1: INR 32,500

Option 2: INR 37,500

Option 3: INR 30,000

Option 4: INR 33,000

Team Careers360 25th Jan, 2024

Correct Answer: INR 37,500


Solution : Royalty = 15% and Paper cost = 25%
So, 15% is equivalent to INR 22,500
Therefore, 25% is equivalent to $(22500×\frac{25}{15})$ = INR 37,500
Hence, the correct answer is INR 37,500.

9 Views

Question : In February 2022, Cabinet approved implementation of Ayushman Bharat Digital Mission. Which ministry of central government launched the Ayushman Bharat Yojana across the country?

Option 1: Ministry of Education

Option 2: Ministry of Ayush

Option 3: Ministry of Health and Family Welfare

Option 4: Ministry of Women and Child Development

Team Careers360 23rd Jan, 2024

Correct Answer: Ministry of Health and Family Welfare


Solution : The correct answer is the Ministry of Health & Family Welfare.

The Ayushman Bharat Digital Mission was implemented by the Ministry of Health & Family Welfare. This mission aims to create unique account numbers for its citizens. The mission

114 Views

Question : Select the most appropriate option to fill in the blank.
I will be joining the office ____ a week's time.

Option 1: by

Option 2: in

Option 3: at

Option 4: during

Team Careers360 24th Jan, 2024

Correct Answer: in


Solution : The correct choice is the second option.

Explanation: The preposition "in" is the correct choice to indicate the duration within which the action will take place. In this context, it signifies that the person will be joining the office within the time span of

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