विभिन्न सरकारी परीक्षाओं के लिए मात्रात्मक योग्यता अनुभाग के सभी महत्वपूर्ण विषयों में से, सरलीकरण और सन्निकटन प्रश्न सबसे अधिक पूछे जाने वाले प्रश्नों में से एक हैं।
उम्मीदवार जो आगामी सरकारी परीक्षाओं की तैयारी कर रहे हैं, उन्हें पता होना चाहिए कि सरलीकरण / सन्निकटन प्रश्न ऐसे होते हैं, जहां सावधानी और कुशलता से हल किए जाने पर बिना किसी त्रुटि के आसानी से अंक प्राप्त किए जा सकते हैं।
इस विषय से पूछे जाने वाले प्रश्नों का भार अधिकतर 3-5 प्रश्नों के बीच होता है और इस विषय को आम तौर पर परीक्षा के प्रारंभिक चरणों में शामिल किया जाता है।
Simplification – Concept
Example: 152 × 23 + (228 ÷ 19)2 =?
Sol:⇒ 15✕(12)2 [brackets are solved first and table of 19 and 15 must be on tips]
⇒ 120+144 [must know the squares]
⇒ 264
Important Parts of Simplification
- Digital Sum
- Number System
- Reciprocals
- HCF & LCM
- Percentages
- Square & Cube
- Approximation
- Fractions & Decimals
- Surds & Indices
Simplification Tricks :-
- बोडमास नियम को समझें।
- यदि किसी व्यंजक में कोष्ठक हैं तो कोष्ठक के भीतर के व्यंजक को पहले सरल बनाया जाना चाहिए।
- डिजिटल योग की अवधारणा को जानें
- पारस्परिक याद रखें।
- जल्दी से बड़ी संख्या के घनमूल और वर्गमूल ज्ञात कीजिए।
Examples with an explanation for Simplification Problems:
1). (10.8×16×12) + (3.6×56×9.2) =?
- 3941.35
- 3966.89
- 3928.32
- 3649.19
- 3645.19
Solution:
Note: All numbers should be Even.
- 270.269
- 240.269
- 280.269
- 290.269
- None of these
Solution:
- 3/4
- 5/7
- 3/7
- 4/7
- None of these
Ans: b
Solution:
4). 3545 ×14.75 – 2325 ×15.25 =?
- 15369.5
- 16832.5
- 11546.5
- 12475.5
- None of these
Ans: b
Solution:
1220×15 – 5870 ×0.25 = 16832.5
(15+0.25=15.25; 15-0.25=14.75) (a-b , a+b)
Here,
3545+2325=5870 (x+y)
3545– 2325 =1220 (x-y)
5). 27% of 250 +22% of 920 +21% of 660=?
- 419.5
- 423.5
- 408.5
- 415.5
- None of these
Ans: c
Solution:
Common percentage method:
(250+920+660) =1830
Here 20% is common;
20% of 1830 =366
Further,
1st part (20+7) = 7% of 250 =17.5
2nd part (20+2) = 2% of 920 =18.4
3rd part (20+1) = 1% 660 = 6.6
366+17.5+18.4+6.6 = 408.5
6). 212 +172 -132 = ?
- 412
- 512
- 561
- 461
- None of these
Ans: c
Solution:
Method:
212 +(172 -132) = 212 +((17+13)(17-13)) = 441 +(30×4) =561
Note: (A2 – B2) = (a+b) (a-b)
7). (22×28) + (38×42) = ?
- 2122
- 2212
- 2132
- 2213
- None of these
Ans: B
Simplification Tricks: If any two numbers in multiplication with the common base number, we can use this method
8). 12.75% of 464 =?
- 59.96
- 57.16
- 51.86
- 59.16
- None of these
Ans: D
Solution:
(12.75×4) of (464/4) = 51% of 116 =59.16
Simplification Tricks: If any fractional number ends with 5, we can convert that into a whole number by this method.
9). 8.2% of 780 +x= 12.9% of 1310
- 107.26
- 106.53
- 105.03
- 103.56
- None of these
Ans: c
Solution:
82×78/100 + X =129×131 /100
(130-1)(130+1) /100 – (80+2)(80-2) /100 =X
X=105.03
10). 0.875 of 848 + 0.625 of 624= ?
- 1132
- 1325
- 1236
- 1250
- None of these
Ans: A
Solution:
87.5% of 848 + 62.5% of 624
(7/8 ×848) + 5/8 ×624 = 742 +390 =1132
Simplification Tricks: 87.5% = (100-12.5)%
= (1-1/8) =7/8
Q. 1:
4 | × | 2 | × ? = 1008 | |
7 | 3 |
B. 2604
C. 2667
D. 2646
E. None of these
? = 1008 × | 7 | × | 3 | = 2646 |
4 | 2 |
Q. 2:
(? – 968) ÷ 79 × 4 = 512
C. 11075
D. 10185
E. None of these
(? – 968) | × 4 = 512 |
79 |
⇒ ? = | 512 × 79 | + 968 = 11080 |
4 |
Q. 3:
(?)3 × (55) ÷ 225 = 3000
B. 8
C. 5
D. 9
E. None of these
Ans. A
(?)3 × (55) ÷ 225 = 3000
(?)3 × (55) = 3000 × 225 = 675000
(?)3 = 675000 ÷ (55) = 216
? = 6
Hence, option A is correct.
Q.4:
– 948 + 147 – ? = – 1432
B. 631
C. 647
D. 676
E. None of these
Ans. B
94736 + 43693 + 25638 = ?
B. 164076
C. 165046
D. 160467
E. None of these
Ans. E
94736 + 43693 + 25638 = 164067
Hence, option E is correct.
Q.1:
132 + 168 ÷ 24 – 33 + 107 = (?)2
A. 2
B. 256
C. 16
D. 4
E. None of these
Ans. D
(?)2 = | 132 + 168 ÷ 24 – 33 + 107 |
(?)2 = | 169 + 7 – 27 + 107 |
(?)2 = | 256 | = 16 = (4)2 |
Hence, option D is correct.
Q.2:
9.6 × 3.6 + 7.2 + 10.8 of | 1 | – | 1 | = ? |
18 | 10 |
A. 42.26
B. 24.26
C. 40
D. 45.26
E. None of these
Ans. A
? = 9.6 × 3.6 + 7.2 + 10.8 of | 1 | – | 1 |
18 | 10 |
Hence, option A is correct.
Q.3:
21 | ÷ | 9 | × | 5 | ÷ | 10 | = ? | |
25 | 20 | 12 | 17 |
B. 5.42
C. 6.66
D. 1.32
E. None of these
Ans. D
? = | 21 | ÷ | 9 | × | 5 | ÷ | 10 |
25 | 20 | 12 | 17 |
= | 21 | × | 20 | × | 5 | × | 17 |
25 | 9 | 12 | 10 |
= | 119 | = 1.32 |
90 |
Q.4:
1827 ÷ 29 ÷ 7 + 567 ÷ 21 = ?
A. 7
B. 4
C. 6
D. 9
E. 36
Ans. C
? = | 1827 ÷ 29 ÷ 7 + 567 ÷ 21 |
= |
|
= | 9 + 27 | = | 36 | = 6 |
Q.5:
6561 ÷ 9 ÷ 81 = ?
A. 1
B. 18
C. 4
D. 81
E. 9
Ans. E
? = 6561 ÷ 9 ÷ 81
= 6561 × | 1 | × | 1 | = 9 |
9 | 81 |
17 | 1 | + 21 | 1 | = 33 | 1 | % of ? |
3 | 2 | 3 |
B. 104.5
C. 112.33
D. 118.33
None of these
Ans. A
17 | 1 | + 21 | 1 | = 33 | 1 | % of ? |
3 | 2 | 3 |
52 | + | 43 | = | 1 | of ? |
3 | 2 | 3 |
104 + 129 | = | 1 | of ? |
6 | 3 |
? = | 233 | = 116.5 |
2 |
Q.2:
18 × | 8 | + 10% of 624 | |
15 | = 4 | ||
? |
B. 18
C. 22
D.24
D. None of these
Ans. B
18 × | 8 | + 10% of 624 | |
15 | = 4 | ||
? |
6 × | 8 | + 62.4 = ? × 4 |
5 |
? = 18
Hence, option B is correct.
Q.3:
√1024 × 40 + 202 + 0.5% of 9600 + 469 = ?3
A. 23
B. 13
C. 17
D. 19
E. None of these
√1024 × 40 + 202 + 0.5% of 9600 + 469 = ?3
Q.4:
4 | 3 | % of 6500 + 3 | 2 | % of 3500 = ? |
5 | 7 |
B. 414
C. 418
D. 404
E. None of these
Ans. B
4 | 3 | % of 6500 + 3 | 2 | % of 3500 = ? |
5 | 7 |
23 | × 6500 + | 23 | × 3500 = ? |
500 | 700 |
? = 23 × 18 = 414
Hence, option B is correct.
Q.5
44 + 54 + 10% of 8000 = ?2
A. 1681
B. 16812
C. 41
D. 43
E. None of these
44 + 54 + 10% of 8000 = ?2
Q.1:
(26 × 14 – 7) ÷ 21 = ?
A. 11
B. 25
C. 33
D. 46
E. None of these
Ans. E
(26 × 14 – 7) ÷ 21
? = | 364 – 7 |
21 |
? = | 357 | = 17 |
21 |
Q.2:
√2116 + √1296 – √1681 = ?
A. 12
B. 33
C. 46
D. 24
E. None of these
Ans. E
Q.3:
(33)2 – (35)2 + (17)2 = ?
A. 121
B. 138
C. 153
D. 165
E. None of these
Ans. C
Q.4:
1496 ÷ 34 = ? + 39
A. 3
B. 5
C. 9
D. 15
E. None of these
Ans. B
Q.5:
142 – 5121/3 + 7841/2 = ?
216
228
238
249
None of these
Ans. A