Aptitude - Decimal Fraction

Exercise :: Decimal Fraction - General Questions

21. 

34.95 + 240.016 + 23.98 = ?

A. 298.0946
B. 298.111
C. 298.946
D. 299.09

Answer: Option C

Explanation:

   34.95
  240.016
 + 23.98
 --------
  298.946
 --------    

22. 

Which of the following is equal to 3.14 x 106 ?

A. 314
B. 3140
C. 3140000
D. None of these

Answer: Option C

Explanation:

3.14 x 106 = 3.14 x 1000000 = 3140000.


23. 

The least among the following is:

A. 0.2
B. 1 0.2
C. 0.2
D. (0.2)2

Answer: Option D

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

A. 0.4
B. 1.2
C. 1.4
D. 4

Answer: Option D

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 ?

A. 5
B. 6
C. 7
D. None of these

Answer: Option B

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.