**Study Book for IBPS CWE Clerk Exam Numerical Ability**

**Numerical Ability Questions with Answers:**

**1)723.870 ‐ ? = 251.36 +450.478**

a. 22.032

b.23.032

c.22.132

d.none of these

**2)35% of 80 = 56?**

a.2

b.2/3

c.1/2

d.0.57

**3)(11)2 ‐ (1.1)2 ‐ (0.11)2 = ?**

a. 119.7779 b. 121
c.119.79 d.119.8021 e. none of these

**4)60+5*12 /(180 / 3 ) = ?**

a.60 b. 120 c.13
d.61 e. none of these

**5)49% of 490 + 490% of 49 = ?**

a.2641.1 b.240.1
c.2401 d.480.2 e. none of these

**6)8.36 *4.35 +8.0004 = ?**

a.44.37 b.44.3664
c.43.5304 d.42.3664 e.none of these

**7)19.24/4 = ?**

√169
*74

a.0.005 b.0.002
c.0.0002 d.0.00002

**8)3/4 ‐ 1/2 ‐ 1/6 ‐ 1/3 is equal to**

a.1 b.1/8 c.2
d.1/12 e.(‐1/4)

**9)Which is the smallest fraction?5/6, 3/8, 2/3 ,3/4**

a.5/6 b.3/8 c.3/4
d.2/3

**10)0.55*0.55+2*0.55*0.45+0.45*0.45/ 0.55+0.45**

a 2

b 0.25

c.0.2

d. 1{hint a2 + 2ab + b2 = (a+b)(a+b)}

**TIME & WORK Based Questions**

Q1) 'A' can do a
piece of work in 10 days and B can do the same work in 15 days. In
how many days the work will be done
them together?

Ans ‐ A & B
whole work can do = 6 days

Q2)If 'm' men
working 'm' hours a day for for 'm' days can produce 'm' units of
work,then the units of

work produced by
'n' men working 'n' hrs a day for 'n' days is

Ans ‐ n3 /m2

Q3)3 men can do as
much work on 5 women or 10 children. If 40 children can do a piece of
work in 7

days , then 6 men
, 5 women and 5 children can do the same work in:

Ans ‐ a)7 days
b)8 days c)9days d)12days e)none

Q4)A tap can fill
a tank in 9 min,another can fill it in 18 min and a third one can
empty at in 12 min.

How long does it
take to fill the tank if all are open.

a)15mts b)18 mts
c)24mts d)36mts e)none {ans 12mts}

Q5)A and b can do
a piece of work in 12 days.B and c can do it in 15 days .C and A can
do it in 20

days.They all
worked for 6 days and then A and C left.In how many days B can finish
the balance of

work.

a)8days b)9days
c)10days d)12days

Q6)A contractor
undertakes to do a piece of work in 40 days.He engages 100 men and
after 35 days ,an additional 100
men,and completes the work.How many days behind schedule would he has
been ,if he not engaged the
additional men?

a)5 b) 8 c) 12
d)18 e)data is insufficient

Q7)In a day A does
twice as much work as B and is therefore able to finish a piece of
work in 60 days

less than B.In
what would A and b working together can finish the work?

a)20days b)25days
c)30days d)40days e)60days

Q8)20men can do a
work in 18 days. How many men are required to finish 3/4 of the work
in 15 days?

a)10 b)12 c) 18
d)20 e)none

Q9)Ramesh can do a
work in 20 days.He worked alone for 10 days.Remaining work was
completed with the help of Dinesh
in 2 days will the work be completed by both together?

Ans ‐ 4days

Q10)A and B
together can do a work in 24 days. B alone does its 1/3 part in 12
days . How long will A alone take to do
the remaining work?

a)48 b)36 c)24
d)72 e) none of these

**SPEED ,TIME AND DISTANCE Based Questions**

**? 1 km = 5/18m/sec**

**? when a train crosses a man/pole,distance = length of train**

**? when a train crrosses a bridge/platform ,distance = length of train + length of platform**

**? when there are two moving bodies ,speed is to be replaced by relative speed,RS = x +y**

**(opposite direction)**

**RS = x ‐y (same direction )**

Q1) A person
walking at 2.5km/hr ,reaches his office 6 min late . If he walks
3.5km/hr ,he reaches there

6 min earlier.How
far is the office from his house?

Ans ‐ 1 3

4

Q2)A man can swim
40km downstream in 4 hrs and the same distance upstream in 20
hrs.Find the

speed of the
stream?

Ans ‐ x+y = 40/4
= 10

x ‐y = 40/20 = 2

2y = 8 ,speed of
stream = 4km/hr

Q3)A passenger
train 250m in length crosses a platform 350m long in 45 sec .The
speed of the train will be.

Ans ‐ 48 km/hr

Q4)A train of
length 290m, is going at a speed of 30 km/hr and another train of
length 210m is moving

at a speed of
20km/hr in the opposite direction .The time required by them to cross
each other is

a)20sec b)24sec
c)36sec d)54sec e)none

Q5)I can row 100km
downstream in 5 hrs and the same distance upstream in 10 hrs.the
speed of the

stream is

a)15km/hr
b)10km/hr c)5km/hr d)5/2km/hr e) none

Q6)A cyclist goes
at a speed of 12km/hr .He can cover 100m in

a)10sec b)20sec
c)30sec d) 1min e)none

Q7)The speed of a
boat in still water is 3km/hr and the speed of the stream is 2km/hr.
It can cover

10km downstream on

a)10hrs b)5hrs
c)3hrs d)2hrs e)none

Q8)A train moving
at a speed of 50km/hr crosses a length 100m in 18 sec. Its length is
:

a)100m b)120m
c)150m d)180m e)none

Q9)A 150m long
train crosses a man walking at the speed of 6km/hr in the opposite
direction in 6

sec.The speed of
the train in km/hr is

a)66 b)84 c) 96
d)106

Q10)A man can row
9 1/3km/hr in still water and he finds that it takes him thrice as
much time to row

up them so as to
row down the same distance in river.The speed of the current is

a)10/3km/hr
b)28/9km/hr c)5/4km/hr d)14/3km/hr

**MISCELLEANOUS PROBLEMS FOR IBPS CWE NUMRICAL ABILITY**

**Q1) The price of one dozen pens is Rs540. What will be the price of 319 such pens ?**

Ans ‐ price of
12 pens = Rs540

price of 1 pen =
540/12

price of 319 pens
= 540*319/12 = Rs 14355

**Q2)A tank can be filled by 20 buckets each of capacity 13.5 lit. If the capacity of each bucket be 9lit**

**,how many bucket will fill the same tank?**

Ans ‐ 30 buckets

**Q3)Five dozen toys are packed in a box and 98 boxes are kept in tempo.How many tempoes can lift**

**29400 toys in one round.**

a)4 b) 5 c)7 d)6
e) none of these

**Q4)The ratio between the present ages of Naveen and Prabhat is 4:5. If after 5 years the ratio of the**

**present age of Prabhat and tha age of Prabhat at that time is 7:8 what will be the ratio between the**

**present age of naveen and Naveen's after 4 years?**

Ans ‐ 7:8

**Q5)The age of sushil 6 years ago was 3 times the age of Snehal .6 years hence the age of Sushil would**

**be 5/3 times that of Snehal.What is the present age of Snehal?**

a)14yrs b)22yrs
c)18yrs d)21yrs e)none of these

**Q6)1/4th part of money of Nikhil is equal to 1/6th part of the money of Yogesh. If total sum of both is**

**equal to Rs 600 then , what is the difference of their money**

Ans ‐ Rs120

**Q7)In an office there are 114 tables and 129 chairs . If 1/6 of the tables and 1/3 of the chairs are**

**broken, how many people work in the office when each person requires one table and one chair?**

Ans ‐ required
no. of persons 86

**Q8)1/5th of Gopal's expenditure is equal to 1/2 of his savings.if his monthly income is 5600 how much**

**amount does he save per month ?**

a)Rs1350 b)1500
c)1680 d)1400 e)none of these {savings = 1600}

**Numerical Ability Formulae:**

Let 3 consecutive
odd no. be y‐2 , y , y+2 respectively

total of these odd
no. = 3y

Let 3 consecutive
even no. be x‐2,x, x+2 respectively

total of these =
3x

**Q9)The difference between the middle number of three consecutive odd numbers and the middle of**

**three consecutive even no is 7. What will the difference between the total of these odd no and the**

**total of those three even numbers?**

Ans ‐ 21

**Q10)The difference of two numbers of two digit each is 24 while the sum of these two no. is 102.What**

**is the larger no?**

Ans ‐ 63

**Q11)When 30% of one no. is added to another no the second no. increases by 1/5th. what is the ratio**

**of the first no to the second no.**

a)5:6 b)3:2 c)2:3
d)1:2 e)none of these

**Q12)The difference between a two digit no and the no. obtained by interchanging the digits is 45.What**

**is the difference between the digits of that no.?**

a)4 b)5 c)6 d)7
e)none of these

**Q13)If the difference between the digits of a two digit no is 3 and the product of the digits is 18, What**

**is the sum of the digits of that no.?**

a)8 b)9 c)7 d)6
e)none of these

**MISCELLANOUS PROBLEMS**

**Q1)Find out the wrong number in the following given sequences?**

? 51 64 24 75
14.75 78.75

a)51 b)64 c)24
d)75 e)none of these

**Q2)The diameter of the driving wheel of the bus is 140cm.How many**

**revolutions per minute must the wheel make in order to keep a speed of**

132km/hr?

b)300 c)400 d)500
e)none of these

**Q3)Three persons A,B, C whose salaries together amount to Rs14400, spend 80,85,75 percent of their**

**salaries respectively.If their savings are in the ratio 8:9:20 then find the ratio of their salaries.**

a)1:2:3 b)3:2:1
c)2:3:4 d)4:3:2 e)data inadequate

**Q4)How many words can be formed with the letters of the word PATLIPUTRA without changing the**

**relative position of vowels and consonants?**

a)2160 b)3250
c)3230 d)3660 e)none of these

**Q5)If the salary of a person is fprst decreased by 25% and then increased by 15%, what is % loss or gain**

a)13.75%loss
b)12.75%gain c)10%loss d)10%gain e)none of these

**Q6) 63,45,72 litres are to be drawn from three cans respectively . What is the exact capacity of**

**measure which will do it most quickly?**

a)9lit b)7lit
c)8lit d)11lit

**Q7)Three integers a, b ,c are such that b/c = 3.The fraction b/a is in its lowest form. Which of the**

**following is the possible value of a?**

a)180 b)234 c)104
d)414

**Q8)what is the least value of x, such that 85324x6 is divisible by 11?**

a)2 b)3 c)1 d)6

**Q9)If 3a+5b/3a‐5b =5 ,find a:b**

a)2:5 b)5:2 c)3:5
d)5:3

**Q10)A pressure cooker is sold for Rs1200/‐ .Sales tax amounts for 1/5th of this and profit 1/3rd of the**

**remainder. Find the CP.**

a)Rs740 b)Rs620
c)Rs640 d)Rs560