(d) None of these 39. The total num...
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# (d) None of these 39. The total number of ways in which six '+' and four '-' signs can be arranged in a line such that no two '-' signs occur together is - (a) LZ/13Z (b) - 16 (17 /13) (c) 35None of these 10 If you have 5 conies of one book, 4 copies of each of

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Number of t'rigns ( =6 ) Number of - oigns = 4 [ -+-t-t+t+t ] 7 nlaces fol - sign 4 nlaces need to be selated [ begin{aligned} 7 C_{4}=frac{71}{413 !}=& frac{7 times 6 times 5 times 4}{1 times 2 times 3 times 4} =& 35 sqrt{24} end{aligned} ]