Model 1 Simplification using VBODMAS Section-Wise Topic Notes With Detailed Explanation And Example Questions

MOST IMPORTANT quantitative aptitude - 4 EXERCISES

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The following question based on simplification topic of quantitative aptitude

Questions : The value of 1 ÷ [1 + 1 ÷ {1 + 1 ÷ (1 + 1 ÷ 2)}] is

(a) $1/2$

(b) 1

(c) 2

(d) $5/8$

The correct answers to the above question in:

Answer: (d)

Using Rule 1,

= 1 ÷ [1 + 1 ÷ {1 + 1 ÷ (1 + 1 ÷ 2)}]

= 1 ÷ [1 + 1 ÷ {1 + 1 ÷ (1 + ${1/2}$)}]

= 1 ÷ [1 + 1 ÷ {1 + 1 ÷ ${3/2}$}]

= 1 ÷ [1 + 1 ÷ {1 + ${2/3}$}] = 1 ÷ [1 + 1 ÷ ${5/3}$]

= 1 ÷ [1 + ${3/5}$] = 1 ÷ $8/5 = 5/8$

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Read more problems based on vbodmas Based Quantitative Aptitude Questions and Answers

Question : 1

Simplify : ${{5/3} × {7/51} of {17/5} - {1/3}}/{{2/9 × {5/7} of {28/5} - {2/3}$

a) $1/4$

b) $1/2$

c) 2

d) 4

Answer: (c)

Using Rule 1,

${{5/3} × {7/51} of {17/5} - {1/3}}/{{2/9 × {5/7} of {28/5} - {2/3}$

= ${{5/3} × {7/51} - {1/3}}/{{2/9 × {4} - {2/3}$

= ${7/9 - 1/3}/{8/9 - 2/3} = 4/9 × 9/2 = 2$

Question : 2

The value of 0.008 × 0.01 × 0.072 ÷ (0.12 × 0.0004) is :

a) 1.02

b) 1.2

c) 0.012

d) 0.12

Answer: (d)

Using Rule 1,

0.008 × 0.01 × 0.072 ÷ (0.12 × 0.0004)

= 0.008 × 0.01 × 0.072 ÷ (0.000048)

= 0.008 × 0.01 × ${0.072}/{0.000048}$

= ${0.00000576}/{0.000048}$ = 0.12

Question : 3

Evaluate : ${- (4 - 6)^2 - 3(- 2)+|- 6|}/{18 - 9 ÷ 3 × 5}$

a) $7/4$

b) $3/8$

c) $8/3$

d) $4/7$

Answer: (c)

? = ${- (- 2)^2 + 6 +6}/{18 - 15}$

= ${- 4 +12}/3 = 8/3$

Question : 4

1– [5 - {2 + (– 5 + 6 - 2) 2}] is equal to :

a) –2

b) –4

c) 0

d) 2

Answer: (b)

Using Rule 1,

? = 1 - [5 - {2 + (–1)2}]

= 1 - [5 - {2 - 2}]

= 1 - [5 - 0]

= 1 - 5 = - 4

Question : 5

Simplify : ${2{3/4}}/{1{5/6}} ÷ {7/8} × (1/3 + 1/4) + 5/7 ÷ {3/4} of {3/7}$

a) 3$2/9$

b) $56/77$

c) $2/3$

d) $49/80$

Answer: (a)

Using Rule 1,

The given expression

${2{3/4}}/{1{5/6}} ÷ {7/8} × (1/3 + 1/4) + 5/7 ÷ {3/4} of {3/7}$

= ${11/4}/{11/6} ÷ {7/8} × ({4+3}/12) + 5/7 ÷ {3/4} of {3/7}$

= $(11/4 × 6/11) ÷ {7/8} × 7/12 + 5/7 ÷ (3/4 × 3/7)$

= ${3/2} ÷ {7/8} × 7/12 + {5/7} ÷ {9/28}$

= ${3/2} × {8/7} × 7/12 + {5/7} ×{28/9}$

= $1 + 20/9 = {9+20}/9 = 29/9 = 3{2}/9$

Question : 6

If ${1120}/{√{P}}$ = 80, then P is equal to

a) 225

b) 14

c) 196

d) 140

Answer: (c)

80 × $√{P}$ = 1120

$√{P} = 1120/80 = 14$

P = $(14)^2 = 196$

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