key words for math

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 ..

About how many inches long is the key? => 2 inches or 1 inch or 3 inches..

Identify the group that has fewer keys. => Group C or Group A or Group C & Group B or Group B..

Which tower has the same number of keys as one on the top? => Tower 2 or Tower 3 or Tower 1 or Tower 4..

Identify the object that can be used as a tool to measure the length of the key. => Figure 2 or Figure 1 or Both of these or None of these..

The ruler is marked in sixteenths of an inch. Find the length of the key. => 2 1 4 inches or 1 1 2 inches or 1 1 4 inches or 1 3 4 inches..

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