[1 1][1 21 37 [in] [1 3781 If the p...
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[1 1][1 21 37 [in] [1 3781 If the product of n matrices is equal to the matrix then the value LO 110 1] 0 1] - LO 1]' of n is equal to - S- (A) 26 (B) 27 (D) 378 (C) 377

JEE/Engineering Exams
Maths
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Analyzing pattorn Then ternfigels added [ begin{array}{l} cdot 0 .left[begin{array}{ll} 1 & 1 0 & 1 end{array}right]left[begin{array}{ll} 1 & 2 0 & 1 end{array}right]left[begin{array}{ll} 1 & 3 0 & 1 end{array}right] cdotleft[begin{array}{ll} 1 & n 0 & 1 end{array}right] =left[begin{array}{ll} 1 & frac{n(n+1)}{2} 0 & 1 end{array}right]=left[begin{array}{ll} 1 & 378 0 & 1 end{array}right] end{array} ] com'paring
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