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Aptitude - Decimal Fraction

Exercise : Decimal Fraction - General Questions
21.
34.95 + 240.016 + 23.98 = ?
298.0946
298.111
298.946
299.09
Answer: Option
Explanation:
   34.95
  240.016
 + 23.98
 --------
  298.946
 --------
22.
Which of the following is equal to 3.14 x 106 ?
314
3140
3140000
None of these
Answer: Option
Explanation:

3.14 x 106 = 3.14 x 1000000 = 3140000.

23.
The least among the following is:
0.2
1 ÷ 0.2
0.2
(0.2)2
Answer: Option
Explanation:

1 ÷ 0.2 = 1 = 10 = 5;
0.2 2

0.2 = 0.222...;

(0.2)2 = 0.04.

0.04 < 0.2 < 0.22....<5.

Since 0.04 is the least, so (0.2)2 is the least.

24.
5 x 1.6 - 2 x 1.4 = ?
1.3
0.4
1.2
1.4
4
Answer: Option
Explanation:
Given Expression = 8 - 2.8 = 5.2 = 52 = 4.
1.3 1.3 13
25.
How many digits will be there to the right of the decimal point in the product of 95.75 and .02554 ?
5
6
7
None of these
Answer: Option
Explanation:

Sum of decimal places = 7.

Since the last digit to the extreme right will be zero (since 5 x 4 = 20), so there will be 6 significant digits to the right of the decimal point.

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