Related Questions

When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel and $$\varphi $$ = Pressure angle)
A $$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\cos \varphi }}{2}$$
B $$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\sin \varphi }}{2}$$
C $$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\cos \varphi }}{2}$$
D $$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\sin \varphi }}{2}$$
The path ______ paved, so we were able to walk through the path.
A was
B had been
C has been
D being
The path-------paved, so we were able to walk through the path.
A was
B had been
C has been
D being
There ar 200 students in a class. 76% passed in Bangla and 54% passed in English . If 10% of the students failed in both the subjects then how many of them passed in both subjects ?
A 30
B 50
C 40
D 80
In an examination 75% of the students passed in mathematics, 45% passed in general science and 30% passed in both subject. What per cent of the students have failed in both subject?
A 35
B 25
C 10
D 15
In a school 80% students passed in Bangla and 65% passed in Science . If 50% of the students have passed both the subjects, what percent of the students have failed in both Bangla and Science?
A 5%
B 10%
C 15%
D 20%
In a certain exam, 65% students passed in Math and 50% passed in English. If 25% of the students have passed in both the subjects, what percent of the students have failed in both Math and English?
A 10%
B 20%
C 25%
D 30%
Out of 120 students, 70% students passed in math and 80% students passed in English. If only 12 students failed in both subjects, how many students passed only in english?
A 10
B 12
C 24
D 36
stand next to the lamppost and face west ,walk 20 yards and then turn 90 degrees clockwise. Walk another 10 yards and then turn 45 degrees anticlockwise. Walk another 15 yards, reverse you direction and walk 5 yards back. Turn 135 degrees clockwise and walk another 10 yards . In which direction are you now facing?
A West
B East
C South
D North
The price of a certain DVD is discounted by 10% and the reduced price is then discounted by another 10%. This series of successive discounts is equivalent to a single discount of :
A 20%
B 19%
C 18%
D 15%

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