Attempt of the following question:

The marks scored by students in Mathematics in a certain Examination are given below:

Draw histogram for the above data.

Attempt of the following question:

There are three boys and two girls. A committee of two is to be formed.
Find the probability of the following events:
Event A : The committee contains at least one girl.
Event B : The committee contains one boy and one girl.

Attempt of the following question:

The measurement (in mm) of the diameters of the head of the screws are given below:

Calculate mean diameter of head of a screw by ‘Assumed Mean Method’.

Attempt of the following question:

Draw the frequency polygon for the following frequency distribution:

Attempt of the following question:

The 11^th term and the 21^st term of an A.P. are 16 and 29 respectively, then find:
a) The first term and common difference.
b) The 34th term.
c) ‘n’ such that t_n = 55.