Vector ⚫Introduction ⚪ Those quantities which have both magnitudes and direction are called Vector . Example : velocity ,accerelation , weight , force are some vector quantities. ⚫ Representation of vectors : ⚪ Geometrically a vector is represented by a line segment. For example , . Here A is called the initial point and B is terminal point. Magnitude or modulus of a is expressed as ⚫ Types of Vector ⚪ Zero vector or null vector : A vector whose magnitude is zero is called zero or null vector. ⚪ Unit Vector : A vector whose magnitude is unity (1). The unit vector in the direction of a vector a is denoted by . ⚪ Collinear or Parallel Vector : Vectors having the same or parallel supports are called collinear or parallel vectors ⚪ Co-initial Vector : Vectors having the same initial point. ⚪ Coplanar Vector : A system of vectors is said to be coplanar, if their support are p...

CSAT Practice Question Question no. 21 What is the least four digit number when divided by 3 , 4 , 5 and 6 leaves a remainder 2 in each case ? [CSAT 2020] looks_one 1012 looks_two 1022 looks_3 1122 looks_4 1222 Answer Option looks_two 1022 Solution Solution : Question no. 22 The recurring decimal representation 1.272727.... is equivalent to [CSAT 2020] looks_one 13/11 looks_two 14/11 looks_3 127/99 looks_4 137/99 Answer Option looks_two 14/11 Solution Solution : Question no. 23 What is the greatest length x such that and are integral multiplers of x ? [CSAT 2020] looks_one looks_two looks_3 looks_4 Answer Option looks_4 Solution Solution : Question no. 24 Consider the following data : Year birth rate death rate 1911 - 1921 48.1 35.5 1921 - 1931 46.4 36.3 1931 - 1941 45.2 31.2 1941 - 1951 39.9 27.4 1951 - 1961 ...