The mean of the frequency table given below is 50.Then find out the values of a and b.
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Complete the table given below.

Complete the table given below.

Complete the table given below:- .

In the given below table, the mean is 21.12, then find the value of k. .

Analyse the table given below and fill in the blanks.

Analyse the table given below. Fill up the blanks

The atomic number of two elements are given below. Si-14 Ni-28 : Find out the group and period of each I element.

From the table given below Estimate the work done.

From the pictures given below, find out the poikilothermic animals.

It was written 21 instead of 12 when the mean of nine numbers are calculated.The mean obtained was 19. Then find out the mean when 12 istaken.