Q1. The mean of 10 numbers is 12.5 The mean of first six numbers is 15 and the mean of last five numbers is 10. Find the sixth number.
Q2. If the mth term of an A.P. be 1/n and nth term be 1/m, then show that its (mn)th term is 1.
Q1. The mean of 10 numbers is 12.5 The mean of first six numbers is 15 and the mean of last five numbers is 10. Find the sixth number.
Q2. If the mth term of an A.P. be 1/n and nth term be 1/m, then show that its (mn)th term is 1.