Following data have been arranged in the ascending order.

29, 32, 48, 50, x, x + 2, 72, 78, 84, 95.

If the median of the data is 63, the value of x is :

1. 31

2. 62

3. 124

4. 134

If the mean of 10, 12, 18, 13, 20 and 17 is :

1. 14

2. 15

3. 16

4. 18

If the mean of 10, 12, 16, 20, p and 26 is 17, then the value of p is :

1. 16

2. 18

3. 20

4. 24

Mean of 10 observations is 20 and that of other 15 observations is 16. Mean of all 25 observations will be :

1. 16.6

2. 18.6

3. 19.6

4. 17.6