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COACHING CENTRE, teJAIHIND t tet tet SALEM. etet e e e 2/9, Jayamurugan Complex, iNear Ph: 9842127725 .Ni.N .Ni.N Axis Bank, Ayodhiyapattanam. .Ni.N .Ni.N i i i a a a a a a a a Question aslal aslal aslal aslal Type ↑ s s s s a TNPSC 2018 daada daada GROUP – IV daadEXAM daada da a a a a a P.P .P.P .MATHS .P.PANSWER KEYww.P.P .P.P TENTATIVE w w w w w w w w w w wwsequence 0.12, 0.012,w0.0012 ww ……………….. iswwww ww 1. The 7th term of the ww w w w w w 6 -6 7 -7 B) 1.2 X 10 C) 1.2 X 10 D) 1.2 X 10 A) 1.2 X 10 0.12, 0.012, 0.0012 .............. Gu\ ùRôPo Y¬ûN«p 7BYÕ Eßl× A) 1.2 X 106

B) 1.2 X 10-6

C) 1.2 X 107

D) 1.2 X 10-7

2. Simplify 

 t t tet tet tet  e e e e e   .N i.N .Ni.N .Ni.N D) 1 .Ni.N i i i A)ai1 B) 1 C) 1 a a a a a a a l l   lal  lal lal a a a a a s s s s s s s s ÑÚdÏL ada d daada daada daada da     a a a a a a .P.P  ÷  «p ( + ) ww.P.P .P.P .P.P .P.P w w w w w w w w   w w w w w w A) 1 B) 1 C) 1 D) 1ww   ww ww  ww ww  wwww 









÷ of ( + )

3. A sum of money triples itself at 8% per annum over a certain time. This time taken is A) 20years

B) 22years

C) 25years

D) 30years

JÚ Ï±l©hP ANXô]Õ BiÓdÏ 8% Yh¥ ÅRj§p êuß UPeLôÏYRtÏ A) 20BiÓLs

B) 22BiÓLs

C) 25 BiÓLs

D) 30BiÓLs

tet tet tet tet e e e e NN .Ni.N .Ni.N D) None of theseaia.Ni.N B) G.P. i. i. C) A.P. and G.P A) iA.P. i a a a a a a lal 3a, 3b, 3c B¡VûYala............... l aslacl GuT] JÚ áhÓj sùRôPoY¬ûN«p aslal a,sb, Es[]saG²p Gu\ s s s a a a a a a a a daùRôPoY¬ûN«p d dad dad dad da Es[Õ. a a a a a P.P .P.P A) A.P. .P.PB) G.P. .A.P. .PCpûX .P .P.P C) Utßm G.P D) HÕm w w w w w w w w w w wwww 5. If -1 < r < 1, thenwwwthew sum of infinite number wwwofw a geometric series iswwww wwww a

b

c

4. If a, b, c are in A.P., then 3 , 3 , 3 are in

A)

(   ) 

B)

(    ) 



C) 

D) na

-1 < r < 1 G²p Ø¥®− YûW ùTÚdÏj ùRôP¬u áÓRp A)

(   ) 

B)

(    ) 



C) 

D) na

tet tet tet tet e e e e N A) iacute B) obtuse C) straight angle .Ni.N angle .Ni.angle .Ni.N D) right angle aia.Ni.N i i a a a a a a AûWYhPj§u AûUÙm úLôQm aslal aslal ........................................ aslal aslal s s s s a a C) úSo D) ùNeúLôQm daadaA) ÏßeúLôQm aB)daad®¬úLôQm daadúLôQm daada da a a a a .P7..P Find the correct relationship .P.P between G.C.D wand .P.PL.C.M .P.P .P.P w w w w w w w w w w G.C.D. ≤ L.C.M. wwww I) G.C.D. = L.C.M. wwww wwww wwww wwwII) 6. The angle in a semi-circle is a ………………………..

III) L.C.M. ≤ G.C.D.

A) I

IV) L.C.M. > G.C.D B) II

C) III

D) IV

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COACHING CENTRE, teJAIHIND t tet tet SALEM. etet e e e 2/9, Jayamurugan Complex, iNear Ph: 9842127725 .Ni.N .Ni.N Axis Bank, Ayodhiyapattanam. .Ni.N .Ni.N i i i a a a a a a a a CÚ l ùYqúYß GiL°u (G.C.D asal aslal Utßm L.C.M) N¬Vô] aslal ùRôPo× aslal s s s s II. ÁlùTÚ.ùTô.Y. ≤ Áf£ß.ùTô.U daadaI. ÁlùTÚ.ùTô.Y = aÁf£ß.ùTô.U daada daada daada da a a a a .P.P III. Áf£ß.ùTô.U. ≤wÁlùTÚ.ùTô.U .P.P .P .P.P .P.P IV..PÁf£ß.ùTô.U. > ÁlùTÚ.ùTô.U w w w w w w w w w w III A) I D) IV wwww wwww B) II wwwC) wwww wwww 8. 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

p, q, r, s, t GuT] áhÓj ùRôPo Y¬ûN«p (A.P) CÚl©p p-4q + 6r – 4s + t = ? A) 1

B) 2

C) 3

D) 0

tet tet tet tet e e e e A) i15 B) 25 i.N C) 5 .Ni.N .N .Ni.N D) 35 .Ni.N i i i a a a a a a a a l JÚalaùTÚdÏjùRôPo Y¬ûN«u ùTÚdÏj ùRôûL aslal AÓjRÓjR SôuÏ Eßl×L°u aslal aslal 625 G²p s s s s s ada EßlûTd LôiL.dada daØRp daada daada da a a a a a a P.P .P.P A) 15 .P.PB) 25 .P.P C).5 D) 35 .P.P w w w w w w w w w w 10. Gain or loss percent ww is always calculatedwonwww ww ww w w wwww w w w w A) Cost price B) Selling Price C) Gain D) Loss 9. If the product of four consecutive terms in G.P is 625. Find the first term

CXôT ApXÕ ShP NRÅRm GlùTôÝÕm GRu úUp LQd¡PlTÓ¡\Õ. A) APdL®ûX

B) ®tTû] ®ûX

C) CXôTm

D) ShPm

tet tet tet tet e e e e 2km/hr..N If.Nhe takes 5 hours in going N is .Ni.Nand coming the distance .Ni.Nbetween his house and .Ni.school i i i i i a a a a a a a a B) 5.5km C) 6km alal D) 6.5km asA)lal5km aslal aslal s s s s s ada UôQYu AYàûPVdadaTs°dÏ ùNpÛm úTôÕ daJÚ daadaU¦dÏ 3¡.Á úYLj§Ûm daada Ts°«−ÚkÕ ada a a a a a P.P úUÛm AYo .Ts°dÏ ùNuß YW 5 .P.P .P.P ÅÓ §Úm×m úTôÕ wU¦dÏ .P.P 2¡.Á úYLj§Ûmww.PùNp¡\ôo. .P w w w w w ww U¦úSWm GÓjÕd ùLôiPôp Ts°dÏm w Åh¥tÏm Es[ çWm ww w w w w w w w ww ww B) 5.5¡.Á wwC) 6¡.Á ww ww A) 5¡.Á D) 6.5¡.Á 11. A student goes to his school from his house at a speed 3km/hr and returns at a speed of





12. If  =  = then

 

A) 7



is B) 2



D)



GuTÕ  t t tet tet tet e e e e e A) 7.N.N B) 2 C) .Ni.N .Ni.N D) .Ni.N  i i i i i a a a a a a a a aslal is biggest ratio? 2:3,s3:5, aslal 4:7, 5.8 aslal aslal 13. Which s s s a daadaA) 3:5 daad4:7 daada daada da B) C) 5:8 D) 2:3 a a a a a .P.P 2:3, 3:5, 4:7, 5.8 CYt±p .P.P ùT¬VÕ GÕ? ww.P.P .P.P .P.P w w w w w w w w w 5:8 A) 3:5 D)w2:3 wwww wwww wwww B) 4:7 wwwC) www 

=  = G²p

C) 

14. 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

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COACHING CENTRE, teJAIHIND t tet tet SALEM. etet e e e 2/9, Jayamurugan Complex, iNear Ph: 9842127725 .Ni.N .Ni.N Axis Bank, Ayodhiyapattanam. .Ni.N .Ni.N i i i a a a a a a a a 90, 150, Utßm Á.ùTô.Ul l l aslal 225 B¡V GiL°u aslaÁ.ùTô.Y asa aslal s s s s a 15 ada B) C) 90,d225 D) 225, 150dada daadaA) 15, 450 daad450, da a a a a a a a .P15. .P If y –  = 6 find the w .P.P of y3 –  .P.P .P.P .P.P value w w w w w w w w w w 234 A) 216 D)w228 wwww wwww B) 222 wwwC) www wwww 

y–



= 6 G²p y3 –



A) 216

-Cu U§lûTd LôiL. B) 222

C) 234

D) 228

16. Which of the following statement is false in a Parallelogram? A) The opposite sides are parallel.

tet tet tet tet e e e e .Ni.Ndiagonals are equal .Ni.N .Ni.N .Ni.N i i i i C) The a a a a a a a a asD)lalThe diagonals bisectseach aslal other aslal aslal s s s ada daKo daada átß? daada daada da a a a a a CûQLWj§p GÕ RY\ô] .P.P .P.P .P.P .P.P .P.P w w w w w w w w w w A) G§ol TdLeLs CûQVôÏm. www wwwwNUUôÏm. wwww wwww wwww B) G§ùW§o w úLôQeLs Utßm TdLeLs B) The opposite angles and sides are equal

C) êûX ®hPeL°u ¿[eLÞm NUUôÏm. D) êûX ®hPeLs Jtû\ùVôuß CÚ NUd á±Óm. 17. If x, 2x + 2, 3x + 3 are in G.P, then 11x, 22x + 22, 33x + 33 form

B) a G.P t t t t teta G.P tet e e e e e e C) a constant sequence D) Neither A.P nor .Ni.N 11x, 22x + 22, 33x .Ni+.N33 Gu\ ila.N2,i.N3x + 3 GuT] JÚ lùTÚdÏjùRôPo ila.Ni.N i i x, 2xla+ Y¬ûN«−Úl©u a a a a a lal lal a a a a a a s s s s s s s s ùRôPo ada Y¬ûNVô]Õ dada d daada daada da a a a a a a a A) JÚ áhÓjùRôPo Y¬ûN B) JÚ ùTÚdÏj ùRôPo Y¬ûN .P.P .P.P .P.P .P.P .P.P w w w w w w w w w w C) JÚ Uô±−j ùRôPo Y¬ûN w w w w w ww ww ùRôPo Y¬ûNÙm ApX wwwùTÚdÏj wwww ApX. wwww D) JÚ áhÓj ùRôPo Y¬ûNÙm A) an A.P

18. The sum of three numbers is 264 if the first number be twice the second and third number be one-third of the first, then the second number is A) 48 B) 72 C) 54 D) 64 êuß GiL°u áÓRp 264 ØRp Gi CWiPôYÕ Gi úTôp CÚ UPeÏ, êu\ôYÕ

tet tet tet tet e e e e .Ni.N .Ni.N .Ni.N D) 64 .Ni.N i i i i a a a a a a a a A) 48 B) 72 C) 54 lal lal lal lal a a a a 0 s s s s s s s s 19. The ada value of  is d daada daada daada da a a a a a a A)  B) 1 C) 0 D) ∞ .P.P 0 .P.P .P.P .P.P .P.P w w w w w w w w w w  -®u U§l× ww w w w wwww ww ww B) 1 wwwC) www A)  0 D)w∞ Gi ØRp Gi¦p êu±p JÚ TeÏ G²p CWiPôYÕ Gi VôÕ?

20. How many solutions have a linear equation in one variable? A) Three Solution

B) Unique SolutionC) Two solution

D) No Solution

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COACHING CENTRE, teJAIHIND t tet tet SALEM. etet e e e 2/9, Jayamurugan Complex, iNear Ph: 9842127725 .Ni.N .Ni.N Axis Bank, Ayodhiyapattanam. .Ni.N .Ni.N i i i a a a a a a a a JÚ lUô±«p AûUkR Ko JÚT¥f asal aslal NUuTôh¥tÏ GjRû] aslal ¾oÜLs? aslal s s s s a ¾oÜ ada C) CWiÓ daadaA) êuß ¾oÜLs aB)daadJÚ daada ¾oÜLs D) ¾oÜLsadaCpûX da a a a .P21. .P Reciprocal of 0 is …………….. .P.P .P.P .P.P .P.P w w w w w w w w w w A) 0 D) No ww B) 1 wC) w∞ wwreciprocal ww wwww 0-®u RûX¸¯ww w w w w w w = ............................ A) 0

B) 1

D) RûX¸¯ ¡ûPVôÕ

C) ∞

22. 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.

tet tet tet tet e e e e C) .Among Ni.N the common multiple .Ni.Nof given numbers, the .Nleast .N is the L.C.M. aia.Ni.N i i i i a a a a a a l lal of their G.C.D and l is equal to theaproduct asD)lal The product of any two aslanumbers aslaL.C.M s s s s s ada átßL°p GÕa RY\ô] át\ôÏm? da¸rLôÔm dada daada daada da a a a a a ÁlùTÚ .P.P .P.P A) ùYqúYß GiL°u .P.P ùTôÕ YÏj§L°p .P.PªLlùT¬V YÏj§ wAqùYiL°u .P.P w w w w w w w ww ùTôÕ YÏj§ BÏm. w w w w w w w w w w ww ww ww ww ww B) CÚ GiL°u ÁlùTÚ ùTô.Y. 1-G²p Aq®Ú GiLÞm TLô GiLs G]lTÓm. C) ùYqùYß GiL°u ùTôÕ UPeÏL°p ªLf£±V UPeÏ AqùYiL°u Áf£ß ùTôÕ UPeÏ BÏm. D) CÚ

GiL°u

ùTÚdLtTXu

AYt±u

ÁlùTÚ

ùTô.Y

Utßm

Áf£ß

ùTô.U

B¡VYt±u ùTÚdLtTXàdÏf NUUôÏm.

tet tet tet tet e e e e .Ni.N .Ni.N .Ni.N .Ni.N i i i i a a a a a a a a A) B) 1150 C) 1540 l l D) 385 X 385 l l lal770 lal a a a a s s s s s s saasa 2a 2 3 2 a 2 2 2a a 2 a a a 1 + 2 + 3 + ........... + 10 = 385 G²p 2 + 4 + 6 + ……. + 20 -u U§l× dad dad dad dad da a a a a a P.P P C).1540 D) 385 X.P.385 .P.P A) 770 .P.PB) 1150 .P.P w w w w w w w w w w 24. In the ratio x% of w yw to y% of x, its fraction value ww is equals to wwww w w w w wwww wwww  23. If 12 + 22 + 33 + ........... + 102 = 385 then 22 + 42 + 62 + ……. + 202 is

A)



B) xy

C) 

D) 1

yu x%-dÏm x-u y% CûPúV, ®¡R ©u]j§u U§l×

A) 

B) xy

C) 

D) 1

25. Arun is now half as old as his father. Twelve years ago the father’s age was three times as old

tet tet tet tet e e e e .Ni.N .Ni.N .Ni.N .Ni.N i i i i a a a a a a a a A) 24years B) 36years C) 48years D) 50years lal lal lal lal a a a a s s s s s s s s AÚ¦u RtúTôûRV YVÕ Tô§VôÏm. Tu²WiÓ ada ada AYÚûPV RkûR«udadYV§p a ada BiÓLhÏ d d d d AÚ¦u YVûRl P.aPaØu× RkûR«u YVRô]Õ P.aPa P.aPa úTôX ØmUPeLôL.P.aPaCÚkRÕ. RtúTôÕ .P.aPa . . . ww RkûR«u YVÕ wwww ww ww ww w w w w w w w w ww ww ww B) 36BiÓLs wwC) 48BiÓLs D)ww50BiÓLs A) 24BiÓLs as Arun. Now the present age of his father’s age is

--------------------------------------------

## TNPSC Group 4 Maths Answer Key 2018.pdf

Page 1 of 4. JAIHIND COACHING CENTRE, SALEM. 2/9, Jayamurugan Complex, Near Axis Bank, Ayodhiyapattanam. Ph: 9842127725. Question Type â. TNPSC GROUP â IV EXAM 2018. MATHS TENTATIVE ANSWER KEY. 1. The 7th term of the sequence 0.12, 0.012, 0.0012 .................... is. A) 1.2 X 106 B) 1.2 X 10-6 C) ...

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