It was a special reunion between them and  their 

The mean of the sample data = 60 and median = 48. Find the mode of this distribution.

24, 29, 62, ?, 758, 3791

The 5th term of an arithmetic progression is 23 and the 12th term is 72. Find the first term and the common difference.

If p:q = 5:7 and p + q = 408, then find the value of (q - p).

Mean of a grouped data calculated using direct method, assumed mean method or step deviation method:

3600, 600, 120, 30, 10, ?

18, 27, 54, 135, 400, 1417.5

21 is divided into three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 179. Find the smallest part.

In an AP, S₅ = 75 and S₇ = 119, where S_n is sum of first n terms. Find the 10th term.