1Q.
Ponit Q is the mirror image of point P .Interchange Y coordinate of point P with X coordinate of pointQ.
Ans 1
2Q .
Is sq root (x-3)^2 = x-3
Stat1 x not equal to 3 => x can be more than 3 or less than 3 , x can be negative also => no definite clue.
stat2 .-xlxl>0
=> it means x
put x =-a in equation .
square root (-a-3)^2 = a+3 =3-x
=> yes , definite answer
Ans B
3Q.A0+A+A1....+A4= 75
Is A atleast 10?
Stat 1:
One member sends 41 members . rest 34 , all different , no restriction ,
A can be more than 10 , less than 10 => no definite answer.
Stat2 :
A no restriction => no definite clue
Combining , no definite clue , A can be more than 10 / less than 10.
ans E
4Q.
(mean - s.d.)
21-6
15
Ans. 12
Thanks/