0,1,2,3,4 সংখ্যা থেকে একটি দুই-অঙ্কের সংখ্যা তৈরি করতে হবে। অঙ্কের পুনরাবৃত্তি হল অ্যালো...

65. 3, 1, 2 , 2, : 9, 1, 4, 4 : : 0, 2, 3, 3, : ?

0.2x + 0.3y = 1.3,0.4x + 0.5y = 2.3

Four coins were tossed 36 times simultaneously. Each time the numbe r of heads appearing was noted down as below: 2, 3, 0, 0, 1, 4, 3, 3, 2, 4, 0, 1, 3, 2, 4, 2, 3, 1, 2, 0, 4, 3, 2, 0, 1, 2, 3, 3, 2, 2, 4, 4, 0, 1, 1, 3. What are the frequencies of 0 and 4 number of heads respectively?

If A=[(3,-3,4),(2,-3,4),(0,-1,1)] , then :

Show that(i) [[5,-1],[ 6 ,7]][[2, 1],[ 3 ,4]]!=[[2, 1],[ 3, 4]][[5,-1],[ 6, 7]] (ii) [[1, 2, 3],[ 0, 1, 0],[ 1, 1, 0]][[-1, 1, 0],[ 0,-1, 1],[ 2, 3, 4]]!=[[-1, 1, 0],[ 0,-1, 1],[ 2, 3, 4]][[1 ,2 ,3],[ 0, 1, 0],[ 1, 1, 0]]

If A=[(3,-3,4),(2,-3,4),(0,-1,1)] , then A^(-1)=

If A=[[3, -1, 4], [2, 3, 1]], B=[[1, 3, 4], [2, 1, 0], [-3, 2, 3]] find AB

If A=[(2, 0,-3),( 4, 3, 1),(-5, 7, 2)] is expressed as the sum of a symmetric and skew-symmetric matrix, then the symmetric matrix is (a) [(2, 2,-4 ),(2, 3, 4),(-4, 4, 2)] (b) [(2, 4,-5),( 0, 3, 7),(-3, 1, 2)] (c) [(4, 4,-8),( 4, 6, 8),(-8, 8, 4)] (d) [(1, 0 ,0 ),(0 ,1 ,0),( 0, 0, 1)]