Easy Way To Do Multiplication

How to do Multiplication of function by a scalar? Explain it by giving example

The best way to make students memorize multiplication tables would be

An instructor has a question bank consisting of 300 easy True / False questions. 200 difficult True / False questions. 500 easy multiple choice questions and 400 difficult multiple choice questions. If a question is selected at random from the question bank, what is the probability that it will be an easy question given that it is a multiple choice question?

An instructor has a test bank consisting of 300 easy True/False questions, 200 difficult True/False questions, 500 easy multiple choice questions (MCQ) and 400 difficult multiple choice questions. If a questions is selected at random from the test bank, what is the probability that it will be an easy question given that it is a multiple choice question.

Which of the following compounds do not conform to the law of multiple proportion?

Amongst the following options which do follow law of multiple proportion ?

An easy way of obtaining Cl_2 gas in the laboratory is :

Which of the following is an easy way of providing credit to the farmer community ?