গণিত - নবম-দশম শ্রেণি

গণিত - নবম-দশম শ্রেণি

Question: P = {a, b}, A = {2, 3, 4} B = {4, 5, 6} `P xx (A - B)` = কত?
A
{(2, a), (2, b), (3, a), (3, b)}

B
{(a, 2), (a, 3), (a, 4), (b, 2), (b, 3), (b, 4)}

C
{(2, a), (2, b), (3, a), (3, b), (4, a), (4, b)}

D
{(a, 2), (a, 3), (b, 2), (b, 3)}

Note: A - B = {2, 3, 4} - {4, 5, 6} = {2, 3} :.` p xx (A - B) = {a, b} xx {2, 3} = {(a, 2), (a, 3), (b, 2), (b, 3)}`
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Question: A ও B দুইটি অশূণ্য সেট হলে--- i. `AuuB = {x : xinA` অথবা `xinB}` ii. `A xx B = {(x, y) : xinA` অথবা `yinB}` iii. A = `{x : xinU` এবং `xinA}` নিচের কোনটি সঠিক?
A
i ও ii

B
i ও iii

C
ii ও iii

D
i, ii ও iii

Note: Not available
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Question: P = {a, b}, A = {2, 3, 4} B = {4, 5, 6} `P xx (A - B)` = কত?