The first letter of a symbol of an element is always written as a _______ letter and second letter as a _______ letter.

The first letter of an element always written in _______ letter.

The letter 'R' in EcoRl is derived from

10 different letters of an alphabet are given. Words with 5 letters are formed from these given letters then the numbers of words which have atleast one letter represent is:

A letter is chosen from English alphabet. Find the probability of the letters being a letter that comes after P

The Earth's gravitational acceleration is denoted by letter_______________.

How many words, with or without meaning , can be made from the letters of the word MONDAY, assuming that no letters is repeated , if (i) 4 letters are used at a time (ii) all letters are used at a time

Magnification is denoted by the letter ____________.