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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Research Officer - Economics and Statistics ' And exam conducted in the year 2021. And Question paper code was '123/2021'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
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The equation 2 + y=5,x+3y=5,x-2y=0 have:
(^) No solution (B) One solution
(C) Two solution (D) Infinitely many solution
The series 4, + + convergent if :
12 2 87
(A) 1>م )® 0<م
© p>l 0) psi
A bag contains 5 black and 6 red balls. Determine the number of ways in which 2 black and 3
red balls can be selected :
(A) 100 (B) 20
(C) 200 (D) 220
The distance of (2,3) from x+y=1 is:
(A) 2units ൪൫ ೫/0 units
(൭ 449 units (D) १2 units
In a Committee, 50 people speak French, 20 speak Spanish and 10 speak both Spanish and
French. How many speak atleast one of these two languages?
(A) 50 (B) 70
(C) 30 ൯൬) 60
Which of the following computer generation uses concept of artificial intelligence?
(^) First Generation (B) Second Generation
(C) Third Generation (D) Fourth Generation
in 2.
= if x#0
If f(x) a continuous function?
1 if x=0
(A) Only in some cases (B) Cannot be determined
(C) Continuous (D) Not continuous
Let (0) and y,(x) be the solutions of the differential equation കാ with initial
2
conditions y,(0)=0 y,(0)=1. Then:
(4) y, and ور will never intersect )8( ہر and ور will intersect at x 7ء
(0) 21 and ون will intersect at x =e ൫) அஹம் پر will intersect at x 1ے
123/2021 16 A