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29 Aug 2019, 10:12
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
86% (01:02) correct
14%
(00:38)
wrong
based on 42
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29 Aug 2019, 10:25
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\(\sqrt{1600}\) = 40
\(\sqrt{2500}\) = 50
Cross of A & E since it's not within bounds
~2200 is closer to 2500 - cross of B
45 * 45 = 2025
47 * 47 = 2209
Ans D
\(\sqrt{2500}\) = 50
Cross of A & E since it's not within bounds
~2200 is closer to 2500 - cross of B
45 * 45 = 2025
47 * 47 = 2209
Ans D
29 Aug 2019, 10:34
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So what I will personally do is to check the unit digit of 2209,which is 9
So the root of this number definitely has either 3 or 7 as unit digit ,so option (b) and (c) out
Now (a),(d), and (e) are in increasing order start with the middle (d), multiplying the number by itself 47•47 =2209
answer is D
Posted from my mobile device
So the root of this number definitely has either 3 or 7 as unit digit ,so option (b) and (c) out
Now (a),(d), and (e) are in increasing order start with the middle (d), multiplying the number by itself 47•47 =2209
answer is D
AbdulMalikVT
Q: √2209?
a 37
b 41
c 45
d 47
e 53
a 37
b 41
c 45
d 47
e 53
Posted from my mobile device
