all kinds of math words

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..

If p 1 objects are of first kind and p 2 objects are of the second kind, then the total number of permutations of all the p 1 +p 2 objects is given by If p 1 objects are of the ith kind and i = 1,2,3,.r, then the total number of permutations of all the p 1 +p 2 +p 3 +...

[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 ..

What kind of triangle is XYZ? => scalene triangle or equilateral triangle or right triangle or rectangle..

Which kind of triangle is ΔABC? => equilateral triangle or isosceles triangle or obtuse triangle or right triangle..

What kind of trend does the scatter plot show? => Positive trend or Negative trend or Constant trend or No trend..

What kind of geometric intersection does the photograph resemble? => intersection of a line and a plane or intersection of a point and a plane or intersecting planes or intersecting lines..

The word DICE has _________line of symmetry. => vertical or horizontal..