Question
If in a certain code language ‘+’ represents
‘×’, ‘–’ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘–’. Find out the value of ‘82 ÷ 25 × 5 ÷ 4 + 11’.Solution
82 ÷ 25 × 5 ÷ 4 + 11 82 – 25 ÷ 5 – 4 x 11 82 – 5 – 4 x 11 82 – 5 – 44 = 33
If n(A) = 25, n(B) = 40 and n(A ∪ B) = 50, then n(A ∩ B) equals
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