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# PAPER - 7

- 5-2-2007
- Categorized in: Numerical Ability

***One clock ringes **** in 7 sec.In how many seconds it will ring ****.**

(ans 10.5 sec)

***One watch is showing**

**.What is the angle between minutes & hours hand?**

(ans 75 degrees)

***Two pipes can fill a tank in 10 1nd 12 hours while third pipe will make the tank empty in 20 hours.If all three pipes operate simultaneously,in how many hours the tank will be filled ?**

Ans.7hours 30 minutes.

** *Diameter of a beaker is 7cm. Mambler(some instrument)dia is 1.4cm.How many mamblers has to be put to increase the water level by 5.6cm. **

*The average of 4 consecutive even numbers is 27. What is the largest number?

(ans 30)

***One ball was dropped from 8ft height and every time it goes half of the height. How much distance it will travell before coming to rest.**

(ans 24 approximately)***Two trains are travelline at equilateral .Train A is traveling in the direction of earths spin.Other train B is travelling in opposite direction of earths spin.Which trains wheels will wear first?and why?**

(ans TRAIN B .Because of less centrifugal force.)

*** 6*12*15 is the volume of some material.How many cubes can be inserted into that?**

Ans.40

***Cost of an item is x. It's value increases by p% and decreases by p%Now the new value is 1 rupee, what is the actual value.**

Ans.(1000)/(1000-p*p).

***A right circular cylinder and a cone are there.Base radius of cone is equal to radius**

*** falling height is proportional to square of the time. one object falls 64cm in 2sec than in 6sec from how much height the object will fall.**

*** gavaskar average in first 50 innings was 50 . after the 51**

^{st}innings his average was 51 how many runs he made in the 51^{st}innings***Distance between two poles is 50 meters.A train goes by 48 kmph in one minute.How many poles will be crossed by the train.**

***A pole seen from a certain distance at an angle of 15 degrees and 100 meters ahead by 30 degrees. What is th height of pole.**

*15 people--each has to pay Rs.20.. 20 people--each has to pay Rs.18.. for 40 people—how much has to pay ?

*15 people--each has to pay Rs.20.. 20 people--each has to pay Rs.18.. for 40 people—how much has to pay ?

***salary is 's' per month,'x'% of salary is given as bonus, if 3 months salary is s1,s2 & s3 then what is his salary.**

ans:s1*x/100 + s2*x/100 + s3*x/100

**103)consider expresion 'ab' . what happens when 'a' is divided by 'c' & 'b' is multiplied by 'c'.**

ans:value remains same.

*** if p=2q then q=r*r,if p-odd then q is even,whether we decide r is even or odd ?**

choices:a)first condition is sufficient

b)second condition is sufficient

c)both are sufficient

d)both are not sufficient

*** What is the value of m given that**

i) m is devided by 2

ii) m is devided by 5

Ans: none of these

*** If he sells 40 magoes, he will get the selling price of 4 mangoes extra, What is his % increse in profit ?**

Ans: 25%

*** 100 glasses are there. A servant has to supply glasses to a person If he supplies the glasses without any damage he will et 3 paise otherwise he will loose 3 paise.At the end of supplying 100 glasses if he gets 270 paise, how many glasses were supplied safely.**

Ans: 95

*** distance D=rt where r & t are +ve and r is constant,as t increses then D_________**

ans:D increses irrespective of r & t

*** E=I*I*R what is the effect of E when I becomes I/2**

ans:1/4E(E decreses by 4 times)

*** out of 55 eggs 5 are defective. what is % of defective eggs**

ans:9/11%

*** area of triangle=1/2*b*h base incresed by 4 times & height is devided by 2, the net effect of area.**

ans:twice the the original area.

*** 1/8 is devided by 's' , if 's' is incresed by 2 times, what is the result.**

ans:increses two times.

**section 2. letter series**

1. a c b d f e g i __ ans: h

2. x y z u v w r s t __ ans: o

3. a c f j o __ ans:u

* section 3. numerical ability*

**1. 10099+99=10198**

2. 31 - 29+2/33=__ ans:64/33

2. 31 - 29+2/33=__ ans:64/33

**3. 2.904+0.0006=___ ans: 2.9046**

4. 55/1000=___ ans:.005

5. 0.799*0.254= 0.202946

6. 200/7*5.04=144

7. 842.8 +602=1444.8

8. 5.72% of 418= 23.9096

9. 625% of 7.71=48.1875

10. 25% of 592=148.00

11. 665+22.9=687.9

12. 15% of 86.04=12.906

* in base representation for a rupee 100 paise,then base 8

representation what is rupee value .

4. 55/1000=___ ans:.005

5. 0.799*0.254= 0.202946

6. 200/7*5.04=144

7. 842.8 +602=1444.8

8. 5.72% of 418= 23.9096

9. 625% of 7.71=48.1875

10. 25% of 592=148.00

11. 665+22.9=687.9

12. 15% of 86.04=12.906

* in base representation for a rupee 100 paise,then base 8

representation what is rupee value .

ans:144

*** A>B,B>C,C=D,D>E,then which is greatest**

a)A/B b) A/C c) A/E d)none

ans: c

*** to travel 'm' miles the time is 'h' hours,then what is the time taken to travel M miles**.

ans:M*h/m

*** a sum 's' is devided into 4 parts.second person gets Rs 10 more than**

first.3rd person is Rs 10 more than second, 4th is 10 more than 3rd.

how much amount do 1st person get.

first.3rd person is Rs 10 more than second, 4th is 10 more than 3rd.

how much amount do 1st person get.

ans;(s-60)/4 *** fridge cost R Rs,cover value is 5,discount d% then its new cost **

ans:R-R*d/100-5(1-d/100)