Previous-year papers
TNPSC Group 4 2018 question paper with answer key
2018 · G4
Questions 119 to 127 of 200
By TNPSC Guide editorial team · Last updated:
Question 119
Simplify : 9/8 ÷ 3/5 of (3/4 + 3/5)
- A. 1 11/18
- B. 1 5/18
- C. 1 13/18
- D. 1 7/18
Answer and explanation
Correct answer: D. 1 7/18
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 38, question 119; final answer key 23.02.2021, S.No. 119: D)
Question 120
A sum of money triples itself at 8% per annum over a certain time. The time taken is
- A. 20 years
- B. 22 years
- C. 25 years
- D. 30 years
Answer and explanation
Correct answer: C. 25 years
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 38, question 120; final answer key 23.02.2021, S.No. 120: C)
Question 121
Find the correct relationship between G.C.D. and L.C.M. I. G.C.D. = L.C.M. II. G.C.D. ≤ L.C.M. III. L.C.M. ≤ G.C.D. IV. L.C.M. > G.C.D.
- A. I
- B. II
- C. III
- D. IV
Answer and explanation
Correct answer: B. II
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 39, question 121; final answer key 23.02.2021, S.No. 121: B)
Question 122
If p, q, r, s, t are in A.P, then the value of p − 4q + 6r − 4s + t is
- A. 1
- B. 2
- C. 3
- D. 0
Answer and explanation
Correct answer: D. 0
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 39, question 122; final answer key 23.02.2021, S.No. 122: D)
Question 123
The G.C.D. and L.C.M. of 90, 150, 225 is
- A. 15, 450
- B. 450, 15
- C. 90, 225
- D. 225, 150
Answer and explanation
Correct answer: A. 15, 450
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 40, question 123; final answer key 23.02.2021, S.No. 123: A)
Question 124
If y − 1/y = 6 find the value of y³ − 1/y³
- A. 216
- B. 222
- C. 234
- D. 228
Answer and explanation
Correct answer: C. 234
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 40, question 124; final answer key 23.02.2021, S.No. 124: C)
Question 125
Which of the following statement is false in a Parallelogram?
- A. The opposite sides are parallel
- B. The opposite angles and sides are equal
- C. The diagonals are equal
- D. The diagonals bisect each other
Answer and explanation
Correct answer: C. The diagonals are equal
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 40, question 125; final answer key 23.02.2021, S.No. 125: C)
Question 126
Reciprocal of 0 is ________.
- A. 0
- B. 1
- C. ∞
- D. no reciprocal
Answer and explanation
Correct answer: D. no reciprocal
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 41, question 126; final answer key 23.02.2021, S.No. 126: D)
Question 127
Which one of the following statements is false?
- A. Among the common divisors of given numbers, the greatest divisor is the G.C.D.
- B. If the G.C.D. of any two numbers is 1 they are said to be prime numbers
- C. Among the common multiples of given numbers, the least is the L.C.M.
- D. The product of any two numbers is equal to the product of their G.C.D. and L.C.M.
Answer and explanation
Correct answer: B. If the G.C.D. of any two numbers is 1 they are said to be prime numbers
Final answer key
Source: Combined Civil Services Examination-4 (Group-IV Services) 2015-2016, 2016-2017 and 2017-2018, question booklet CCSFT, General Tamil with General Studies (SSLC STD), General Studies file (questions 101-200), published with the tentative answer key (CCSFT page 41, question 127; final answer key 23.02.2021, S.No. 127: B)