wite the following in roster form and write the cardinal number of each:  C={x:xn2,n is equal to N,10<N<16}

Asked by Akash Deep | 28th Jul, 2017, 07:03: PM

Expert Answer:

begin mathsize 16px style The space question space should space be
straight C equals left curly bracket straight x space colon space straight x equals straight n squared comma space straight n space element of space straight N comma space 10 space less than space straight n space less than space 16 right curly bracket
Natural space numbers space between space 10 space and space 16 space are space 11 comma space 12 comma space 13 comma space 14 comma space 15
The space squares space of space these space numbers space are space 121 comma space 144 comma space 169 comma space 196 comma space 225
therefore space Roster space form equals straight c equals left curly bracket 121 comma space 144 comma space 169 comma space 196 comma space 225 right curly bracket
Cardinal space number equals number space of space elements space in space straight a space set equals straight n left parenthesis straight C right parenthesis equals 5

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Answered by Rashmi Khot | 31st Jul, 2017, 09:54: AM