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Let A = {x|x ^(2) -4x+ 3 lt 0 , x in R} ...

Let `A = {x|x ^(2) -4x+ 3 lt 0 , x in R}` `B={x|2^(1-x)+p le 0;x^2-2(p+7)x+5 le 0}` If `A subB,` then the range of real number `p in [a,b]` where, a,b are integers. Find the value of `(b-a).`

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VIKAS GUPTA (BLACK BOOK)-FUNCTION -SUBJECTIVE TYPE PROBLEMS
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