ECAT Computer Science Test

ECAT Computer Science Entry Test

Sr. #	Questions	Answers Choice
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5	Sum of first n terms of an arithmetic series is
6	The n numbers A₁,A₂,A₃,.....A_nare called an arithmetic means between a and b if a.A₁,A₂,A₃.....A_n, b is ______	An arithmetic series An arithmetic sequence A geometric sequence A harmonic sequence
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9		2x cos x2 2sinxcosx - sin x2 2x sin x2
10	Arithmetic mean between a and b is
11		2x cos x2 -2xcosxsinx 2x Sin x2 -Sin x2
12		3/4 -3/4 4/3 -4/3
13	-2, 1, 4, 7,.... is ______	Harmonic sequence Arithmetic sequence Geometric sequence Arithmetic series
14	The difference of two consecutive terms of an A.P. is called ______	General term Common ratio Common difference None of these
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16	The general term of the A.P. is	a<sub>1</sub>+ (n - 1) d n + (a<sub>1</sub>- 1) d d + (n - 1) a<sub>1</sub> None of these
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18	The general term of a sequence is denoted by	a<sub>1</sub> a<sub>n</sub> n s<sub>n</sub>
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20	Find the next two terms of 7, 9, 12, 16,...	18, 20 19, 22 20, 25 21, 27
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25	If a_n= 2n -3, write the first four terms	-3, -1, 1, 3 1, 3, 5, 7 -1, 1, 3, 5 None of these
26	A function whose domain is a subset of natural numbers is called ______	Identity function Sequence Onto function Series
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28	An equation which holds good for all values of variables is called	Equation Conditional equation Constant None
29	How many types of an equation	1 3 2 None
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