Question
A fan manufacturer found that 27% of the total product
is defective. If the number of products in good condition is 4088 then find out the number of defective products.Solution
ATQ, Let the total number of products be N. If 23% are defective the remaining are in good condition Hence 73% of N = 4088 N = 4088/73 ×100 = 5600 number of defective products = 5600-4088 = 1512
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If a line has direction ratios 2, -1, -2, determine its direction cosines.
Compute P(A∩B), if P(B) = 0.8 and P(AǀB) = 0.35
I). p 2  – 17p + 70 = 0
II). q 2  – 25q + 154 = 0
