Hello aspirant,

Andhra University is one of the oldest universities of India and is well known for its quality education. I would have suggested for you to go ahead with your admission procedures but because it is an online course, I am a bit skeptical about it. A company or

Correct Answer: 1

Solution : Given:
$x+y+z=1,\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=1$, $xyz=-1$
Consider, $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=1$
⇒ $xy+yz+zx=xyz=-1$
Now, $x+y+z=1$
⇒ $(x+y+z)^2=1^2$
⇒ $x^2+y^2+z^2+2(xy+yz+zx)=1$
⇒ $x^2+y^2+z^2+2(-1)=1$
⇒ $x^2+y^2+z^2=3$
We know, $x^3+y^3+z^3-3xyz=(x+y+z)(x^2+y^2+z^2-(xy+yz+zx)$
So, putting all the values, we get,
⇒ $x^3+y^3+z^3-3×(-1)=1×[3-(-1)]$
⇒ $x^3+y^3+z^3=4-3$
$\therefore x^3+y^3+z^3=1$
Hence, the correct answer is 1.

Correct Answer: 21

Solution : The people who can speak Tamil and Telugu is represented by the region common to the circles representing Tamil and Telugu. The required region is shaded in the venn diagram below –

So, the number of all those people who can speak Tamil and Telugu

Correct Answer: buy a pair of scissors

Solution : The correct choice is the third option.

Explanation: The sentence needs "a pair of scissors" because "scissors" is a plural noun. "Pair" is used to indicate two connected objects functioning together. The sentence means she's purchasing a tool with

Correct Answer: 0.6

Solution : Given –

0.15, 0.3, ? , 1.2, 2.4

The pattern follow for the series is –

0.15 × 2 = 0.3; 0.3 × 2 = 0.6; 0.6 × 2 = 1.2; 1.2 × 2 = 2.4

The series is 0.15, 0.3, 0.6,

Correct Answer: 3

Solution : Only three tangents can be drawn passing through two external touching circles.


Hence, the correct answer is 3.

Correct Answer: 31st October

Solution : The correct answer is 31st October.

Every year, Halloween is celebrated on 31st October. It is a festival in various countries, especially in the United States, where people engage in activities like trick-or-treating, costume parties, and decorating homes with spooky themes. The day

Correct Answer: 20

Solution : Let the total work done be $100$ units.
Remaining work = $100 - \frac{37}{100}×100$ = $100-37$ = $63$ units
5 × efficiency of A = 4 × efficiency of B
$\frac{\text{Efficiency of A}}{\text{Efficiency of B}}$ = $\frac{4}{5}$
Efficiency of A = $4x$
Efficiency of B