1
JEE Main 2022 (Online) 28th June Evening Shift
Numerical
+4
-1
Change Language

If the system of linear equations
$$2x - 3y = \gamma + 5$$,
$$\alpha x + 5y = \beta + 1$$, where $$\alpha$$, $$\beta$$, $$\gamma$$ $$\in$$ R has infinitely many solutions then the value
of | 9$$\alpha$$ + 3$$\beta$$ + 5$$\gamma$$ | is equal to ____________.

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2
JEE Main 2022 (Online) 28th June Evening Shift
Numerical
+4
-1
Change Language

Let $$A = \left( {\matrix{ {1 + i} & 1 \cr { - i} & 0 \cr } } \right)$$ where $$i = \sqrt { - 1} $$. Then, the number of elements in the set { n $$\in$$ {1, 2, ......, 100} : An = A } is ____________.

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3
JEE Main 2022 (Online) 27th June Evening Shift
Numerical
+4
-1
Change Language

Let A be a matrix of order 2 $$\times$$ 2, whose entries are from the set {0, 1, 2, 3, 4, 5}. If the sum of all the entries of A is a prime number p, 2 < p < 8, then the number of such matrices A is ___________.

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4
JEE Main 2022 (Online) 27th June Morning Shift
Numerical
+4
-1
Change Language

The positive value of the determinant of the matrix A, whose

Adj(Adj(A)) = $$\left( {\matrix{ {14} & {28} & { - 14} \cr { - 14} & {14} & {28} \cr {28} & { - 14} & {14} \cr } } \right)$$, is _____________.

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