Model Question  Verbal Problems Related to sets  Some Solved Problems  2.    In a survey of 75 people, it was found that 40 liked to drink tea only and 8 liked to      drink tea   and coffee both. The number of people who liked to drink tea was th…

Indices The product of m factors each equal to a is denoted by a m , or, a ´ a ´ a ´ . ... to m factors = a m . Here, m is called index of a. The following formulae are useful for solving the problems in this unit. In this topic we shall solve …

HCF and LCM  1.            Define H.C.F. Soln:  The HCF (Highest Common Factor) of two or more numbers/expressions is the greatest number/expression that exactly divides each of the given numbers/expressions . 2.            Define L.C.M. Soln:   The…