Alright let’s see if you guys can solve this 
:
If x = √3 - 2 then the number
√(7 - 4√3) equals:
-x / 2
-x
x
Alright let’s see if you guys can solve this
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@anon30406793
Can I also post Astronomical questions?
I don’t want to join this challenge but I will post just for fun 
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Sure…You can post any type of questions that we cant find answer by simply searching in google.
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I also cant solve this question w/o paper even though I am an indian bank and ssc exam aspirant.
Below is an easy question for all.
x + 1/x = 30
x² + 1/x² = ?
902
898
900
can’t be determined
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Don’t you think that this is a bit too easy? 
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Real Question To Try
Eight persons K, L, M, N, O, P, Q and R sitting in a row. Some of them are facing north while some are facing south. N and M sits 5th to the right of each another but none of them sits at an extreme end. L and K sits third to the left of each another but none of them sits at an extreme end. Q sits third to the right of N. P sits second to the right of L. R sits third to the left of P. K sits second to the left of O. Both the person sitting at extreme ends faces opposite direction to each other. R sits to the left of L and both of them are facing opposite direction to each other. Q does not face south direction. Not more than two persons sitting together face same direction.
Q1. Who among the following sits third to the right of R?
(a) Q
(b) K
(c) M
(d) N
(e) None of these
Answer :
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I’ll answer tomorrow cause I’m gonna sleep
now 
In case if you noticed, yes I sleep early these days.
Goo night friend @anon30406793
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If x + y + z = 0
Find (x²y² + y²z² +z²x² ) ÷ ( x⁴ + y⁴ + z⁴) = ?
[SSC CGL Exam , India ]
1/2
3/4
1
2
0
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A and B together can complete a piece of work in ‘m’ days. If A alone can completes the same work in ‘m + 3’ days and B alone completes the work in ‘m + 12’ days, find the value of ‘m’
a. 6
b. 8
c. 10
d. 11
@anon87955785
@The_integrous_one
@Sherlock221B78
@BlackMagic123
@Binocular
@User1132Kazuma
You are all invited to solve this question
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It satisfies perfectly 
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Which question’s answer?
x + y + z = 0
Find (x²y² + y²z² +z²x² ) ÷ ( x⁴ + y⁴ + z⁴) = ?
if x = 0 , y = 0, z = 0
0 ÷ 0 = indeterminate form
If x = 1, y = -1 , z = 0
{1²(-1)² + 0 + 0 } ÷ { 1⁴ + (-1)⁴ + 0 }
1 ÷ { 1 + 1 }
1/2
Answer = ½
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I will surely try to do it tomorrow. Going to sleep
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A and B together can complete a piece of work in ‘m’ (6) days. If A alone can completes the same work in ‘m+3’ (9) days and B alone completes the work in ‘m+12’ (18) days, find the value of ‘m’ (6)
A and B together can complete a piece of work in ‘m’ (8) days. If A alone can completes the same work in ‘m+3’ (11) days and B alone completes the work in ‘m+12’ (20) days, find the value of ‘m’ (8)
A and B together can complete a piece of work in ‘m’ (10) days. If A alone can completes the same work in ‘m+3’ (13) days and B alone completes the work in ‘m+12’ (22) days, find the value of ‘m’ (10)
A and B together can complete a piece of work in ‘m’ (11) days. If A alone can completes the same work in ‘m+3’ (14) days and B alone completes the work in ‘m+12’ (23) days, find the value of ‘m’ (11)
In conclusion, it could be any number @anon30406793 
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Anyway, I’ve got homework so maybe I’ll solve this tomorrow
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If A completes in 11 days and B completes in 20 days , will both of them complete in 8 days ?
Total Work = Time × efficiency
Total work = 11A = 20B…(1)
Efficiency ratio = A/B = 20/11
A’s efficiency = 20 work /day
B’s efficiency = 11 works /day
Putting their efficiencies in equation (1)
Total works = Time × efficiency = 11 × 20 = 20 × 11 = 220 works
Total efficiency = ( 11 + 20 ) = 31 works /day
A + B would do in = 220/31 days ( not in 8 days )
If we take
A in 9 days
B in 18 days
9A = 18B = Total work
A/B = 2/1
Efficiency of A = 2
Efficiency of B = 1
Total work = 9 × 2 = 18 × 1 = 18
Combined efficiency = 3 ( = 2 + 1 )
Time taken by both A and B = 18/3 = 6
6 is correct
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