Model 4 Simplification with continued fraction Practice Questions Answers Test with Solutions & More Shortcuts
simplification PRACTICE TEST [4 - EXERCISES]
Model 1 Simplification using VBODMAS
Model 2 Simplification based on square & square root
Model 3 Simplification based on cube & cube root
Model 4 Simplification with continued fraction
Question : 11 [SSC CGL Prelim 2003]
Simplify : $1 + 4/{2+3/{5-{1/2}}} - 1/2(10 ÷ 2)$
a) – $1/2$
b) – $15/2$
c) 0
d) 1
Answer »Answer: (c)
$1 + 4/{2+3/{5-{1/2}}} - 1/2(10 ÷ 2)$
$1 + 4/{2+3/{{10 - 1}/2}} - 1/2(5)$
= $1 + 4/{2+{6/9}} - 5/2 = 1+4/{2 + {2/3}} - 5/2$
= $1 + 4/{8/3} - 5/2 = 1 + {4 × 3}/8 - 5/2$
= $1 +3/2 - 5/2 ={2 + 3 -5}/2 = 0$
Question : 12 [SSC CAPFs SI 2013]
The value of $1 +1/{1+2/{3+{4/5}}}$ is :
a) $2/19$
b) $48/29$
c) $8/19$
d) $12/29$
Answer »Answer: (b)
$1+1/{1+{2/{{15+4}/5}}}$
= $1+1/{1+{{2×5}/19}} = 1+1/{{19+10}/19}$
= $1+{19/29} = {29+19}/29 = 48/29$
Question : 13 [SSC CPO S.I.2004]
$1 + 1/{1+{1/2}}$ is equal to
a) $5/3$
b) $2/3$
c) $3/2$
d) 3
Answer »Answer: (a)
Expression = $1 + 1/{1 + {1/2}}$
= $1 + 1/{{2+1}/2} = 1+{2/3}$
= ${3 + 2}/3 = 5/3$
Question : 14
If 2 = $x+1/{1+1/{3+{1/4}}}$, then the value of x is :
a) $12/17$
b) $13/17$
c) $21/17$
d) $18/17$
Answer »Answer: (c)
2 = $x+1/{1+1/{3+{1/4}}}$
2 = $x+1/{1+{1/{{12+1}/4}}}$
2 = $x+1/{1+{4/13}}$
2 = $x+1/{{13+4}/13}$
$2 = x + {1/{17/13}}$
2 = $x + 13/17 ⇒ x = 2 -{13/17}$
$= {34 - 13}/17 = 21/17$
Question : 15
Simplify : $1+2/{1+3/{1+{4/5}}}$
a) $3/7$
b) $7/5$
c) $4/7$
d) $7/4$
Answer »Answer: (d)
? = $1 + 2/{1 + {{3 × 5}/9}} = 1 + 2/{1 + {5/3}}$
= $1 + {2 × 3}/8 = 7/4$
IMPORTANT quantitative aptitude EXERCISES
Model 4 Simplification with continued fraction Shortcuts »
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