CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
1169
@sampras said: Continued :
A shopkeeper sells two Almirahs each for Rs 1980, on one who loses 10% and on another gains 10%, find the overall gain/loss in the whole transaction?
A.gain of 2%
B.gain of 1%
C. Loss of 1%
D. Neither gain nor loss
loss 1%
1170
@sampras said: Continued :
A shopkeeper sells two Almirahs each for Rs 1980, on one who loses 10% and on another gains 10%, find the overall gain/loss in the whole transaction?
A.gain of 2%
B.gain of 1%
C. Loss of 1%
D. Neither gain nor loss
loss of 1%

two things for same gain & loss always x^2/100 (x = pr or loss %)

for diffrent values +gain - loss - (gain*loss)/100 (all values in %)
1171
@sampras said:
A shopkeeper sells two Almirahs each for Rs 1980, on one who loses 10% and on another gains 10%, find the overall gain/loss in the whole transaction?
A.gain of 2%
B.gain of 1%
C. Loss of 1%
D. Neither gain nor loss
C. Loss of 1%
1172
@sampras c loss 1%
1173
@sampras said: Continued,
2^x - 2^(x-1) = 4, then x^x = ?
x=3
ans 27
1174
@sampras said: Continued,
2^x - 2^(x-1) = 4, then x^x = ?
27 hit & trial is the best method
1175
@sampras x^x=81

1176
@sampras 27
1177
@rajbharati said:
x=3 ans 27
@watsnew24 said:
27 hit & trial is the best method
no need can go for straight method even ,.... 2^x(1-1/2) = 4
or, 2^(x-1) = 2^2 .... x=3
1178

hi puys, one Q how to reply to a particular post... couldn't make the original post light

1179
@sampras said:
no need can go for straight method even ,.... 2^x(1-1/2) = 4
or, 2^(x-1) = 2^2 .... x=3
bhai how did u get "2^x(1-1/2) = 4" and further "2^(x-1) = 2^2"???
1180
@sscjindabad said:
bhai how did u get "2^x(1-1/2) = 4" and further "2^(x-1) = 2^2"???
2^x(1-2^-1)=2^x(1-1/2^1)....
1181

One qn given by the cand , I could not solve... probably related to kinematics,... of course off the topic, but please bother for solution, ... I forgot those eqns of motion...


Q. If the displacement x of a body in linear motion is given by x = (-1/3)t^2+16t+3, where t is the time, then at what time the body comes to rest.??? .... some science student can help..
1182
@sscjindabad said:
bhai how did u get "2^x(1-1/2) = 4" and further "2^(x-1) = 2^2"???
because 2^(x-1) = (2^x)/2
1183
@simha63 said:
2^x(1-2^-1)=2^x(1-1/2^1)....
thanx mate n what about the next step..further "2^(x-1) = 2^2"???
1184
@sampras said: One qn given by the cand , I could not solve... probably related to kinematics,... of course off the topic, but please bother for solution, ... I forgot those eqns of motion...
Q. If the displacement x of a body in linear motion is given by x = (-1/3)t^2+16t+3, where t is the time, then at what time the body comes to rest.???
bhai sahab yeh Q agar aata bhi ho toh bhi solve nahi kar paunga kyunki aise Q padte hi chhod dunga....
1185
@sscjindabad said:
thanx mate n what about the next step..further "2^(x-1) = 2^2"???
dont explain got it...
1186
@sscjindabad said:
bhai sahab yeh Q agar aata bhi ho toh bhi solve nahi kar paunga kyunki aise Q padte hi chhod dunga....
yeah i know its of not our concern, but chele ko reply toh karna hai... and what better option will be for me than to find reply from you learned friends...
1187
@sampras said: One qn given by the cand , I could not solve... probably related to kinematics,... of course off the topic, but please bother for solution, ... I forgot those eqns of motion...
Q. If the displacement x of a body in linear motion is given by x = (-1/3)t^2+16t+3, where t is the time, then at what time the body comes to rest.???
t=24 units
1188
@sampras said: One qn given by the cand , I could not solve... probably related to kinematics,... of course off the topic, but please bother for solution, ... I forgot those eqns of motion...
Q. If the displacement x of a body in linear motion is given by x = (-1/3)t^2+16t+3, where t is the time, then at what time the body comes to rest.??? .... some science student can help..
24
dx(t)/dt =0