Consider the letters of English alphabets, A to Z. List among them the letters which have (a) vertical lines of symmetry (like A)

Consider the letters of English alphabets, A to Z. List among them the letters which have (b) horizontal lines of symmetry (like B)

A letter of English alphabet is chosen at random. The probability that the letter is a consonant is:

Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.

A letter is chosen from English alphabet. Find the probability of the letters being a) A vowel b) a letter that comes after P c) A vowel or a consonant d) Not a vowel

100 surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as follows: Determine the median number of letters in the surnames. Find the mean number of letters in the surnames? Also, find the model size of the surnames.

A letter is selected at random from the English alphabets. What is the probability that it is a vowel ?

State whether the followmg sets are finite or infinite. (i) The set of months in a year. (ii) {1,2,3, ..., 99, 100) (iii) The set of prior numbers smaller than 99. (iv) The set of letters in the English alphabet. (v) The set of lines that can be drawn are parallel to the X-Axis (vi) The set of numbers which are muitiplies of 5. (vii) The set of circles passing through the origin (0,0).

What letters of the English alphabet have reflectional symmetry (i.e., symmetry related to mirror reflection) about: a vertical mirror

Ten different letters of an alphabet are given . Words with five letters are formed from these given letters. Then the number of wards which have at least one letter repeated is :