If` (1,5,35 ),( 7,5,5),( 1, lamda ,7) and ( 2 lamda ,1,2)` are coplanar then the sum of all possible values of ` lamda ` is

If the points A( 5,5 lamda ) , B ( - 1, 3 , 2) and C ( -4 , 2 , -2) are collinear , find the value of lamda .

The vertices of a DeltaABC are (lamda,2-,2lamda),(-lamda+1,2lamda) and (-4-lamda,6-2lamda) . If its area be 70 units, then number of integral values of lamda is

If veca,vecb,vecc are noncoplanar vectors and lamda is a real number, then the vectors veca+2vecb+3vecc, lamda vecb+4vecc and (2lamda-1)vecc are non coplanar of (A) all values of lamda (B) all except one values of lamda (C) all except two values of lamda (D) no value of lamda

If [{:(1,-3,2),(2,-8,5),(4,2, lamda):}] is not an invertible matrix, then what is the value of lamda

If bara,barb,barc are non coplanar vectros and lamda is a real number then the vectors bar+2barb+3barc,lamda barb+4barc and (2lamda-1)barc are non coplanar for (A) all values of lamda (B) non value of lamda (C) all except two values of lamda (D) all except one vaue of lamda

If the lines (1 -x )/(3) = ( 7y - 14)/(2 lamda) = (z - 3)/(2) "and" (7 - 7x)/(3lamda) = (y - 5)/(1) = ( 6 - z ) /(5) are at right angle, then the value of lamda is

lamda_1, lamda_2, lamda_3 are the first 3 lines of balmer series. Find lamda_1//lamda_3