WBJEE 2021 Math Solved Paper

CATEGORY - I (Q:1 to Q50)

Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.

Question : 21 of 75

Marks: +1, -0

Let T & U be the set of all orthogonal matrices of order 3 over R & the set of all non-singular matrices of order 3 over R respectively
Let A = {–1, 0, 1}, then

there exists bijective mapping between A and T, U.
there does not exist bijective mapping between A and T, U.
there exists bijective mapping between A and T but not between A & U.
there exists bijective mapping between A and U but not between A & T.

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