(0.81)2 ÷ (0.729)3 × (0.9)2 = (0.9) - 3

1.  6

2.  2

3.  4

4.  0

5.  None of these

5

0

Explanation :
No Explanation available for this question

65% of  × 5 = ÷ 154

1.  56

2.  28

3.  35

4.  32

5.  None of these

5

28

Explanation :
No Explanation available for this question

The average age of a class of 39 students is 15 years .If the age of the teacher be included, then the average increases by 3 months .Find the age of the teacher

1.  25 years

2.  27 years

3.  35 years

4.  28 years

4

25 years

Explanation :
No Explanation available for this question

The average of eight numbers is 14. The average of six of these numbers is 16.The average of the remaining two numbers is

1.  4

2.  8

3.  16

4.  none

4

8

Explanation :
No Explanation available for this question

The average of ten numbers is 7 . If each number is multiplied by 12 ,then the average of new set of numbers is

1.  7

2.  19

3.  82

4.  84

4

84

Explanation :
No Explanation available for this question

The average of six numbers is 30.If the average of first four is 25 and that of last three is 35, the fourth number is

1.  25

2.  30

3.  35

4.  40

4

25

Explanation :
No Explanation available for this question

The average age of 30 students is 9 years .If the age of their teacher is included ,it becomes 10 years . The age of the teacher (in years ) is

1.  27

2.  31

3.  35

4.  40

4

40

Explanation :
No Explanation available for this question

After replacing an old member by a new member, it was found that the average age of five members of a club is the same as it was 3 years ago. what is the difference between the ages of the replaced and the new member

1.  15 yrs

2.  8 yrs

3.  4 yrs

4.  2 yrs

4

15 yrs

Explanation :
No Explanation available for this question

Three years ago , the average age of A, B and C was 27 years and that of B and C, 5 years ago was 20 years. A’s present age is

1.  30

2.  35 yrs

3.  40 yrs

4.  48 yrs

4

40 yrs

Explanation :
No Explanation available for this question

1.  2 yrs

2.  2.4 yrs

3.  3 yrs

4.  1.5 yrs

4