Related Questions

A bag contains 26 purple jellybeans, 15 green jellybeans, and 9 yellow jellybeans; these jellybeans are the only items in the bag. If a person peaches into the bag and picks out only purple jellybeans, how many jellybeans would the person have to pick out in order to double the probability that a jellybean picked out of the bag at random would be a green jellybean?
A 5
B 25
C 21
D 15
An instrument store gives a 10% discount to all students off the original cost of an instrument. During a school sale, an additional 15% is taken off the discounted price. Rahim, a student at the local high school, purchases a flute for Tk. 306. What was its original cost before discount?
A Tk. 400
B Tk. 408
C Tk. 375
D Tk. 425
An instrument store gives a 10% discount to all students of the original cost of an instrument. During a school sale an additional 15% is taken off the discounted price. Rahim, a student at the local high school, purchases a flute for Tk 306. How much did it originally cost?
A Tk 400
B Tk 408
C Tk 375
D Tk 425
If the instrument is to have a wide range, the instrument should have
A Linear scale
B Square-law scale
C Exponential scale
D Logarithmic scale
Pick out the first order system from among the following.
A Damped vibrator
B Mercury in glass thermometer kept in boiling water
C Interacting system of two tanks in series
D Non-interacting system of two tanks in series
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.
A $${\text{t}} \propto \frac{1}{{{{\text{a}}^{\text{n}}}}}$$
B $${\text{t}} \propto \frac{1}{{{{\text{a}}^{{\text{n}} - 1}}}}$$
C $${\text{t}} \propto \frac{1}{{{{\text{a}}^{{\text{n}} + 1}}}}$$
D $${\text{t}} \propto {{\text{a}}^{\text{n}}}$$
The waiter at an expensive restaurant has noticed that 60% of the couples order dessert and coffee. However, 20% of the couples who order dessert don't order coffee. what is the probabillity that the next couple the water seats will not order dessert
A 20%
B 25%
C 40%
D 60%
In each sentence below, there is a blank space. Pick out the most appropriate word to fill in the blanks to make the sentence correct : We should always stick to out decisions; otherwise, the people will mock --- us.
A over
B at
C on
D upon
Pick out the extensive property out of the following.
A Surface tension
B Free energy
C Specific heat
D Refractive index
Pick out the endothermic reaction out of the following.
A C + $$\frac{1}{2}$$O2 = CO
B CO + 3H2 = CH4 + H2O
C CaCO3 = CaO + CO2
D CO + $$\frac{1}{2}$$O2 = CO2

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