2013 I Questions & Answers: part8



2013 I QUESTIONS AND ANSWERS :: part8 : 6 to 10

Following Multiple choice objective type questions and answers will help you as a free online coaching for your TRB SSC CGL written exam preparation for 2017. These are useful study materials collected from previous year question papers. :

6.If x²+y²+z²=20 and x+y+z=6 then the value of x³+y³+z³-3xyz is

64
70
72
76

7.The minimum value of (x-2)(x-9) is

-11/4
49/4
0
-49/4

8.If a³-b³-c³=0 then the value of a⁹-b⁹-c⁹-3a³b³c³ is

1
2
0
-1

9.If xy(x+y)=1 then the value of 1/xy-x-y is

3
-3
1
-1

10.If a+b+c=2s,then (s-a)²+(s-b)²+(s-c)²+s² / a²+b²+c²

a²+b²+c²
0
1
2

More SSC CGL 2013 I QUESTIONS AND ANSWERS available in next pages

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