Friday, 23 October 2015

Mathematics Objective Type Questions For CGL Tier 2 Exam

1.       In a triangle    ABC , if A=120° , b=2 and C=30° then a=?
a)3
b)2 √3
c)√3
d)2
2.       In    ABC , if a=5,b=12 and c=13, then the value of sin2B= ?
a)      125/144
b)      120/169
c)       144/169
d)      None
3.       The roots of 2x^2-6x+7=0 are….
a)      Real , unequal and rational
b)      Real , unequal and irrational
c)       Real and equal
d)      Imaginary
4.       The roots of 2x^2 -6x+3=0 are….
a)      Real , unequal and rational
b)      Real , unequal and irrational
c)       Real and equal
d)      Imaginary
5.       The polynomial x^2-x+1 has –
a)      One proper linear factor
b)      Two proper linear factor
c)       No proper linear factor
d)      None of these
6.       The roots of the eqation 15x^2-28=x are
a)      Real and equal
b)      Real and unequal
c)       Complex numbers
d)      None of these
7.       The roots of ax^2+bx+c=0 will be reciprocal to each other, if
a)      a=1/c
b)      a=c
c)       b=ac
d)      a=b
8.       A die is thrown. What is the probability of getting a prime number ?
a)      1/6
b)      1/3
c)       1/2
d)      1

9.       In simultaneous throw of two dice the probability of getting a total of 7 is :
a)      7/36
b)      1/7
c)       1/4
d)      1/6
10.    A coin is tossed successively three times. The probability of getting one head or two heads is :
a)      2/3
b)      3/4
c)       4/9
d)      None

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