Question: Directions: What approximate value should come in place of question mark (?) in the following questions? (You are not required to calculate the exact value.) [IBPS (PO) 2013]
$ {{(4.989)}^{2}}+{{(21.012)}^{3}}+\sqrt{1090}=? $
Options:
A) 9219
B) 9391
C) 9319
D) 9129
E) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
- $ {{(4.989)}^{2}}+{{(21.012)}^{3}}+\sqrt{1090} $
$ \Rightarrow $ $ ?\approx {{(5)}^{2}}+{{(21)}^{3}}+\sqrt{1089} $
$ \Rightarrow $ $ ?\approx 25+9261+33=9319 $