Simplification Questions
In Simplification Questions, an individual needs to solve the problem by doing complex calculations. Here, on this page we have mentioned Simplification Formulas as well as Simplification Questions & Answers that contains short solutions and can be solved using tricks.
Simplification Topic comes under Quantitative Aptitude section and is asked in mostly all the competitive exams. So, it’s important for candidates to learn the tricks and tactics of solving Simplification Questions in the given time limit.
Rules of Simplification:
VBODMAS:
- V : Virnaculum or bar
- B : Bracket
- : Of
- D : Division
- M : Multiplication
- A : Addition
- S : Subtraction
Modulus:
Modulus of a real number x is its positive value, denoted by |x|.
Thus, |7| = 7 and |−7| = 7
Simplification Formula:
- (a + b)2 = a2 + b2 + 2ab
- (a − b)2 = a2 + b2 − 2ab
- (a + b)(a − b) = a2 − b2
- (a + b)2 − (a − b)2 = 4ab
- (a + b)2 + (a − b)2 = 2 (a2 + b2)
- (a + b + c)2 = a2 + b2 + c2 + 2 (ab + bc + ac)
- (a3 + b3) = (a + b) (a2 − ab + b2)
- (a3 − b3) = (a − b) (a2 + ab + b2)
- (a + b)3 = a3 + b3 + 3ab(a + b)
- (a − b)3 = a3 − b3 − 3ab(a − b)
- (a3 + b3 + c3 − 3abc) = (a + b + c) (a2 + b2 + c2 − (ab + bc + ca))
- If a + b + c = 0, then a3 + b3 + c3 = 3abc
Simplification Tricks:
- Learn BODMAS.
- Use the concept of digital sum.
- Memorize tables up to 30.
- Memorize cubes and squares of numbers up to 35.
- Learn the concept of percentages.
- Learn tricks to find squares and cubes of numbers greater than 35.
- Learn tricks to find cube roots and square roots of large number.
- Memorize the reciprocals.
Get Here: How to Prepare for Written Exam
Simplification Questions
Simplification Questions and Answers
Question 1) 1035 ÷ [(3/4) of (71 + 65) – 15 ¾] = ?
- 12
- 24
- 18
- 26
- None of these
Answer: (1)
Explanation:
1035 ÷ [(3/4)*136 – 63/4] = x
X = 1035 ÷ [102 – (63/4)]
X = 1035 ÷ [(408 – 63)/4]
X = 1035 ÷ (345/4)
X = 1035 *4/345
X = 12
Question 2) √((27 ÷ 5 ×?) ÷ 15) = 5.4 ÷ 6 +0.3
- 12
- 4
- 9
- 15
- None of these
Answer: (2)
Explanation:
√((27 /5 )×(x/15)) =0.9+0.3
(3/5) √ x = 1.2
√ x = 6/3 =2
X= 4
Question 3) 363 × 40961/2 × 72 × 18 ÷ (93 × 722) = 4?
- 8
- 12
- 7
- 5
- None of these
Answer: (4)
Explanation:
(36*36*36*64*72*18)/(9*9*9*72*72) = 4x
4*4*43 = 4x
45 = 4x
X = 5
Question 4) (913 + 329 + 522 + 343) ÷ (18 + 24 – ? + 18) = 43
- 23
- 11
- 7
- 29
- 15
Answer: (2)
Explanation:
(913 + 329 + 522 + 343) ÷ (18 + 24 – x + 18) = 43
2107 ÷ (60 –x) = 43
(2107/43) = 60 – x
49 = 60 – x
X = 60 – 49 = 11
Question 5) 12¾ % of 2400 + 23 ½ % of 800 + 452 = 1125 ÷ 25 × 4 + ?
- 658
- 532
- 776
- 614
- 590
Answer: (3)
Explanation:
(51/400)*2400 + (47/200)*800 + 2025 = (1125/25) + 4x
306 + 818 + 2025 – 45 = 4x
3104 = 4x
X = 3104/4 = 776
Question 6) (4/5) of 11325 + 56 % of 1750 = (?)2 + 436
- 116
- 72
- 98
- 84
- 102
Answer: (3)
Explanation:
(4/5)*11325 + (56/100)*1750 = x2 + 436
9060 + 980 – 436 = x2
10040 – 436 = x2
9604 = x2
X = 98
Question 7) 1.8 × 625 + 5.6 ÷ 0.7 + 415 × 11.8 = (?)2 – 211
- 79
- 85
- 92
- 69
- 61
Answer: (1)
Explanation:
1.8 × 625 + 5.6 ÷ 0.7 + 415 × 11.8 = (?)2 – 211
1125 + 8 + 4897 = x2 – 211
6241 = x2
X = 79
Question 8) 586 × 9234 ÷ 48 % of 950 = 36 × 750 ÷ 4 + ? + 4500
- 25
- 728
- 5
- 75
- 474
Answer: (3)
Explanation:
586 × [9234 ÷ ((48/100)*950)] = 36 × (750/4) + x + 4500
586*(9234/456) = 6750 + x + 4500
11866.5 – 11250
X = 616.5
Question 9) (28 × 9 + 54 × 3 + 12 × 11) ÷ (142 – √961 + 17) = ?
- 6
- 3
- 5
- 8
- 7
Answer: (2)
Explanation:
(28 × 9 + 54 × 3 + 12 × 11) ÷ (142 – √961 + 17) = x
X = (252 + 162 + 132) ÷ (196 – 31 + 17)
X = 546/182
X = 3
Question 10) √13225 + ∛205379 + 52 % of 700 = 408 + ?
- 156
- 218
- 189
- 130
- None of these
Answer: (4)
Explanation:
√13225 + ∛205379 + 52 % of 700 = 408 + x
115 + 59 + (52/100)*700 – 408 = x
115 + 59 + 364 – 408 = x
X = 130
Question 11) (7 × 7)3 ÷ (49 × 7)3 × (2401)2 = 7?
- 7
- 5
- 6
- 8
- None of these
Answer: (2)
Explanation:
(7 × 7)3 ÷ (49 × 7)3 × (2401)2 = 7x
(72)3 ÷ (72 × 7)3 × (74)2 = 7x
76 ÷ 79 × 78 = 7x
76 – 9 + 8 = 7x
75 = 7x
X = 5
Question 12) 5 ¾ – 4 1/8 + 7 ½ – 3 3/8 = ?
- 4 3/7
- 6 5/6
- 7 ½
- 5 ¾
- None of these
Answer: (4)
Explanation:
5 ¾ – 4 1/8 + 7 ½ – 3 3/8 = x
X = (5 – 4 + 7 – 3) (3/4 – 1/8 + ½ – 3/8)
X = 5 [(6 – 1 + 4 – 3)/8]
X = 5 (6/8) = 5 (3/4)
Question 13) (2 7/9) ÷ (5 1/2) × (693/350) = (1/3) of (5/7) of (147/175) of (?)
- 12
- 26
- 5
- 18
- 9
Answer: (3)
Explanation:
(25/9)*(2/11)*(693/350) = (1/3)*(5/7)*(147/175)*x
1 = (x/5)
X = 5
Read Out: Problem on HCF and LCM
Question 14) (3/7) of ? – (2/5) of (13/16) of 2160 = 12 % of 900
- 2150
- 1540
- 1960
- 1890
- 2370
Answer: (4)
Explanation:
(3/7)*x – (2/5)*(13/16)*2160 = (12/100)*900
(3x/7) – 702 = 108
(3x/7) = 108 + 702
(3x/7) = 810
X = (810*7/3) = 1890
Question 15) ∛157464 + √8836 – 45 % of 800 =? + (1188 ÷ 9) – 362
- 952
- 816
- 878
- 924
- None of these
Answer: (1)
Explanation:
54 + 94 – (45/100)*800 = x + (1188/9) – 1296
54 + 94 – 360 + 1296 = x + 132
54 + 94 – 360 + 1296 – 132 = x
X = 952
Question 16) (4/5) of 11325 + 56 % of 1750 = (?)2 + 436
- 116
- 72
- 98
- 84
- 102
Answer: (3)
Explanation:
(4/5)*11325 + (56/100)*1750 = x2 + 436
9060 + 980 – 436 = x2
10040 – 436 = x2
9604 = x2
X = 98
Question 17) 18 ¼ % of 17200 + 33 2/3 % of 1860 + 37 2/3 % of 19680 = ?
- 11178
- 13456
- 9824
- 10242
- 8454
Answer: (1)
Explanation:
(73/400)*17200 + (101/300)*1860 + (113/300)*19680= x
X = 3139 + 626.2 + 7412.8
X = 11178
Question 18) 1323 ÷ (27 % of 700) = 35 × 7 3/5 of (? ÷ 190)
- 7
- 9
- 4
- 5
- 8
Answer: (4)
Explanation:
1323 ÷ [(27/100)*700] = 35 × (38/5)*(x/190)
1323 ÷ 189 = 35 × (38/5)*(x/190)
(7*5*190)/(35*38) = x
X = 5
Question 19) 32450 ÷ 11 + (4/9) of 11520 + 48 % of 7500 = ?2 – 430
- 150
- 178
- 110
- 92
- None of these
Answer: (3)
Explanation:
(32450/11) + (4/9)*11520 + (48/100)*7500 = x2 – 430
2950 + 5120 + 3600 + 430 = x2
X2 = 12100
X = 110
Solve Here: Discount Questions and Answers
Question 20) 492 ÷ 14 × 8 + 582 = 4 × ? – 15 % of 2480
- 1489
- 1277
- 1645
- 1823
- None of these
Answer: (2)
Explanation:
(49*49*8)/14 + 582 = 4x – (15/100)*2480
1372 + 3364 = 4x – 372
1372 + 3364 + 372 = 4x
5108 = 4x
X = 5108/4 = 1277
Candidates must go through Simplification Questions & Answers given on this page of recruitmentresult.com and can practice from it to score good marks in the examination.