Squareroots & Cuberoots Model Questions Set 1 Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 1 EXERCISES
The following question based on Squareroots & Cuberoots topic of quantitative aptitude
(a) 45
(b) 43
(c) 55
(d) 53
e) None of these
The correct answers to the above question in:
Answer: (a)
$√{450 + 890 + 685} = √{2025}$ = 45
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Question : 1
$√54 × √2120 ÷ √460$ = ?
a) 140
b) 120
c) 160
d) 180
e) 200
Answer »Answer: (c)
73.86 × 46.04 ÷ 21.44 = ?
? = 74 × 46 ÷ 22
? = 154.7 ≈ 160
Question : 2
The smallest number by which 3888 must be divided so that the resulting number is a perfect square is
a) 6
b) 2
c) 3
d) None of these.
Answer »Answer: (c)
Resolving 3888 into its prime factors, we find that
3888=2×2×2×2×3×3×3×3×3
3888 = (2×2) × (2×2) × (3×3) × (3×3) ×3
Here we find that prime factor 3 is appearing alone.
So, if we divide 3888 by 3, we will get a perfect square number
Question : 3
$√{12 × 145 ÷ 6 + 34}$ = ?
a) $(324)^2$
b) – 18
c) 18
d) $√18$
e) None of these
Answer »Answer: (c)
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Squareroots & Cuberoots Model Questions Set 1
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