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(4) Mathematics (Q. No. 91-120)
91. Which one of the following cannot be the square of a natural number?
(a) 30976
(b) 75625
(c) 28561
(d) 143642
(e) none of these
Answer – d
92. The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, then the other is
(a) 279
(b) 283
(c) 308
(d) 318
Answer – c
93. 12.1212+17.0005-9.1102= ?
(a) 20.0015
(b) 20.0105
(c) 20.0115
(d) 20.1015
Answer – c
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96. The average age of 35 students in a class is 16 years. The average age of 21 students is 14, What is the average age of remaining 14, students?
(a) 15 years
(b) 17 years
(c) 18 years
(d) 19 years
Answer – d
98. The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
(a) 4 years
(b) 8 years
(c) 10 years
(d) None of these
Answer – a
100. 10% of the voters did not cast their vote in an election between two candidates. 10% of the votes polled were found invalid. The successful candidate got 54% of the valid votes and won by a majority of 1620 votes. The number of voters enrolled on the voters list was
(a) 25000
(b) 33000
(c) 35000
(d) 40000
Answer – a
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