math words dictionary

Question 1 - Question: Answer: As n represents all positive integers, we have Multiplying the above terms of both sides respectively, we get Multiplying both sides of inequality by n!, we g..

Question: Ten different letters of an alphabet are given. Words with five letters are formed from these given letters. Find the number of words which have atleast one letter repeated. Answer: Total number of 5 letter words from given 10 letters = 10 5 (if ..

In other words, a square matrix A is invertible if and only if A is a non-singular matrix. (c) If A and B are invertible square matrices, then (AB) - 1 = B - 1 A - 1 (d) If A and B are two non-singular square matrices of the same order, then AB and BA are also non-singular matr..

[A i j ] where A i j is the co-factor of the element a i j . Adjoint of A is denoted by Adj A. Note that the concept of adj is only for square matrix. A square matrix A is said to be non-singular if |A| 0. Let A be a square matrix of order n. If there exists a square matrix B of order n, such that ..

Jeff wants to measure the perimeter of his dictionary. The dictionary is 13 in. long and 10 in. wide. What is its perimeter? => 23 in. or 130 in. or 46 in. or 36 in...

The price of a new version of Dictionary was 125% of the price of the original version. The cost of the original version of the Dictionary was $60. What would be the cost of the new version of the Dictionary? => $75 or $65 or $90 or $85..

The word DICE has _________line of symmetry. => Vertical or Horizontal..

Choose the word for 9. => seven or nine or two..

Select the correct word. => Even or Odd or I don′t know...

Choose the correct word. => I don′t know. or Even or Odd..