64% + 20% +________ % = 100%

35% + _______% = 100%

45% = 100% -________%.

Fill in the blanks: Probability of _________ events is 100%

70% = ______%- 30%

In a tape recorder factory three machines A, B and C produced 50%, 30% and 20% of total production. The percentage of the defective output of these machines are 2%, 5% and 10% respectively. A tape recorder is selected randomly and found to be defective, find the probability that it is produced by machine A.

Explain- An alloy which is made of 20% of zinc and 80% of copper metal is used to make electrical devices.

A first order reaction is 20% complete in the 10 minutes. Calculate the time period for 75% completion of the reaction.

In a town of 10,000 families, it was found that 40% families buy newspaper A, 20% by newspaper B and 10% buy newspaper C. Further 5% buy A and B, 3% buy B and C, 4% buy A and C. If 2% of the families buy all the three newspaper find: Number of families that buy none of the three newspapers.

An experiment measures quantities a,b,c and d and x is calculated from formula x=(ab^(1//2))/(c^(3//2)d^(3)) . The percentage errors in a,b,c and d are 2% , 4% , 6% and 1% respectively. What is the percentage error in x ?