tnpsc combined engineering services 20-05-2018 mental...
TRANSCRIPT
TNPSC Combined Engineering Services 20-05-2018
Mental Ability & Aptitude
1.
2.
3.
Ans: C
Two-dimensional Diagrams:
In one-dimensional diagrams, only length is taken into account. But in two- dimensional diagrams the area represent the data and so the length and breadth have both to be taken into account. Such diagrams are also called area diagrams or surface diagrams. The important types of area diagrams are:
1. Rectangles 2. Squares 3. Pie-diagrams ,Ughpkhd tpsf;fg; glq;fs;
xU ghpkhzg; glq;fspy; ePsk; kl;Lk; fzf;fpy; vLj;Jf; nfhs;sg;gl;lJ. Mdhy; ,U ghpkhd tpsf;fg;glq;fspy; tptuq;fspd; gug;G Fwpg;gplg; gLtjhy; ePsk;> mfyk; ,uz;LNk vLj;Jf;nfhs;sg;gLfpwJ. ,k;khjphpahd glq;fs; gug;gsT tpsf;fg;glq;fs; vdTk; miof;fg;gLfpd;wd. ,itahtd. 1. nrt;tfq;fs; 2. rJuq;fs; 3. tl;l tpsf;fg; glq;fs;
4.
Solution:
30.756 100 56.7%
4
5.
Explanation: Ans: A. 5
3 2 1 7 3'sOpposite Number 7
2 2 1 5 2'sOpposite Number 5
5 2 1 11 5'sOpposite Number11
7 2 1 15 7'sOpposite Number15
6.
Explanation:
Largest 4-digit number = 9999
Required number = (9999 - 55) = 9944.
7.
8.
Explanation:
1 2 1 1100 100 5 years=5years 4 Months
18.75 3
xN
R
9.
Or 30000(107/100)=32100 (32100*7)/100=147 is for 1 year 2100+2100+147=4347
10.
Explanation:
3 3 93 3 4.5
2 2 2h a cm
11.
Explanation:
Let their ages be 2x and 3x years (2x + 12) / (3x + 12) = 11 /15 ⇒ 15(2x + 12) = 11(3x + 12) ⇒ 3x = 48 ∴ x = 16 ∴ age of sumit = 3x = 48 years
12.
5 8
P+S.I=A 10,080100
140P 510,080 P=10,080 Rs.7200
100 7
PP
13.
Explanation: Ans: D. 2 hours
1 1 1 2 3 1 6 1
x,y,z 1hour work=6 4 12 12 12 2
x, y , z work together to complete it in 2 days.
14.
Ans: B
15.
Explanation:
2 2
2
c d c d c d
c cd c c d
HCF c d
16.
Explanation: Ans: C. 35
HCF=1
Product of two numbers = LCM x HCF LCM = 35
17.
Explanation:
1 1 1: : : : 30
2 3 5
1 1 130: 30: 30 15:10:6
2 3 5
x y z LCM
18.
Explanation: Ans: D The series is cabbac / cabbac / cabbac. Thus, the pattern cabbac is repeated.
19.
Explanation: D
20.
Explanation: D
35 125 5 3x x
21.
Explanation: Ans: A 3 11 25 11 33
2 5 44 5 15
Step I: 25 11 5
44 5 4
Step II: 3 11 4 15 6 1
12 5 5 33 5 5
22.
Explanation: Ans: A
Volume 316 14 7 1568l b h m
Surface Area
2
2 2 16 14 14 7 7 16
2 224 98 112 2 434 868
lb bh hl
cm
23.
Ans: B.
24.
Explanation:
3 9 2
4 3 16 18 4
16 18 4 50
4 16 4
P P
P P
P
P P
APPOLO STUDY CENTRE NO. 25, NANDHI LOOP STREET,
WEST C.I.T. NAGAR, CHENNAI – 35. CALL: 044- 42867555, 24339436,
9840226187, 9789918859 VISIT: www.appolosupport.com /
www.appolotraining.com