CBSE Class 11-commerce Answered

a and b are two sets such that n(a)= 3 and n( b)= 6 , find minimum value of n(a union b) and maximum value of n(a union b)

Asked by sharmatanushka30 | 07 Sep, 2020, 06:06: PM

Expert Answer

Given: n(a) = 3 and n(b) = 6

straight n left parenthesis straight a union straight b right parenthesis greater or equal than straight n left parenthesis straight a right parenthesis space and space straight n left parenthesis straight a union straight b right parenthesis greater or equal than straight n left parenthesis straight b right parenthesis space rightwards double arrow space straight n left parenthesis straight a union straight b right parenthesis greater or equal than 6 straight n left parenthesis straight a union straight b right parenthesis less or equal than straight n left parenthesis straight a right parenthesis plus straight n left parenthesis straight b right parenthesis space space rightwards double arrow space straight n left parenthesis straight a union straight b right parenthesis less or equal than 9 Hence comma space the space minimum space value space of space straight n left parenthesis straight a union straight b right parenthesis space is space 6 space and space its space maximum space value space is space 9

Answered by Renu Varma | 08 Sep, 2020, 11:24: AM

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