टेस्ला खरीदने वाले 4 रईस इंडियन | A2 Motivation |#shorts #AShortADay #Tesla #a2_sir

Let A, be the area of an acute angled triangle inside which another triangle of area A2 is drawn such that its sides are are parallel to the sides of the original triangle.If the process repeated again to form triangles of area An,n=3,4,......, then =A1/A4(A)64(B)16(D)256 (C) 8

In a four-dimensional space where unit vectors along the axes are hat i , hat j , hat ka n d hat l ,a n d vec a_1, vec a_2, vec a_3, vec a_4 are four non-zero vectors such that no vector can be expressed as a linear combination of others and (lambda-1)( vec a_1- vec a_2)+mu( vec a_2+ vec a_3)+gamma( vec a_3+ vec a_4-2 vec a_2)+ vec a_3+delta vec a_4=0, then a. lambda=1 b. mu=-2//3 c. gamma=2//3 d. delta=1//3

Let vec a=a_1 hat i+a_2 hat j+a_2 hat k , vec b=b_1 hat i+a_2 hat j+b_2 hat k ,a n d vec c=c_1 hat i+c_2 hat j+c_2 hat k , be three non-zero vectors such that vec c is a unit vector perpendicular to both vectors vec aa n d vec b . If the angle between aa n db is pi//6, then |a_1a_2a_3b_1b_2b_3c_1c_2c_3|^2 is equal to 0 1 1/4(a1 2+a2 2+a3 2)(b1 2+b2 2+b3 2) 3/4(a1 2+a2 2+a3 2)(b1 2+b2 2+b3 2)(c1 2+c2 2+c3 2)

Consider the following statements : A number a_1 a_2 a_3 a_4 a_5 is divisible by 9 if 1. a_1 + a_2 + a_3 + a_4 + a_5 is divisible by 9. 2. a_1 - a_2 + a_3 - a_4 + a_5 is divisible by 9. Which of the above statements is/are correct?