# Quant Questions Asked in RBI Assistant Prelims 2017 (Memory Based)

Hello Aspirants

We are sharing some of the memory based questions from Quantitative Aptitude section asked in RBI Assistant Prelims Exam held on 27th November 2017. RBI Assistant Prelims 2017 Memory Based:

Number Series:

1. 4, 17, 40, 71, 108, ?
2. 24, 10, 8, 10, 18, ?
3. 6, 14, 45, 184, ?
4. 17, 38, 80, 164, ?
5. 5, 18, 57, 174, ?
6. 6, 5, 7, 12.5, 27, ?
7. 3, 18, 35, 56, 83,?
8. 7, 6, 10, 27, ?, 515
9. 45, 49, 40, 56, 31,?
10. 11, 29, 65, 137,?, 369
11. 16, 33, 67, 135, ?, 543
12. 5, 8, 14, 25, ?, 70
13. 152, 76, 38, 19, ?, 4.75
14. 7, 16, 30, 48, 69, ?
15. 134, 142, 115, 179, 54, ?

Word Problems:

1. 2 taps can fill a tank in 30 hours and 15 hours respectively. There is one emptying pipe. When all 3 pipes are opened, the took to fill the tank is 12 hours 30 minutes. Find the time in which the emptying pipe can empty whole tank?
2. 2 taps can fill a tank in 10 and 20 hours respectively and one can empty it in 40 hours. If all pipes are opened, find total time to fill the tank.
3. 3 persons – A, B, C. B 12 years older than A. C 2 years younger than A. (A+2)/(B+4) = some ratio given. Find C’s age 5 years hence.
4. Rs 10,000 invested in 2 parts. 1 part at 10% compound interest, 2nd part at 20% compound interest. Total amount received at the end of 2 years is given. Find the amount invested at 10% rate of interest.
5. Rs X invested at 5% simple interest for 3 years.  Total amount received given. If same amount X is invested at 4% simple interest for 4 years, find amount received.
6. 108 litres pure milk in a can. 36 litres milk taken out, same amount of water added. Now 15 litres of mixture taken out, and 7 litres of water added. Water constitutes what % of the total mixture now?
7. A, B, C invested 12600, 10800, 16200 Rs resp. They invested amount for same period. Out of total profit C received Rs 16200 as his share. Find the difference between the profits of A and B.
8. Circumference of semi circle is 108 cm. Find the circumference of circle who radius is equal to the diameter of semicircle. (Note – Circumference of semi circle = pie*r + 2r)
9. Mp of article is Rs 1500. It is sold at 20% discount. Had it been sold for Rs 100 less, profit of 10% had been made. Find the cost price.
10. Number of students in school in 2012 is 3200. In 2013, it increased by 30%. In 2014 it decreased by 5% as compared to 2013. If in 2014, number of boys is  2893, find number of girls in school.
11. Side of square having perimeter 64 cm is equal to the breadth of rectangle having area 320 sq. cm. Find the perimeter of rectangle.
12. A person covered some distance by car A at ‘X’ km/hr in ‘X’ minutes. He covered remaining part by car B at 23 km/hr in 15 hours. he covered total distance 480 km. Find X… (Note that X minutes is given here – convert to hours)
13. Average of 15 numbers given. Average of first 4 given, last 9 given. Find the average of 5th and 6th.

## 43 Thoughts to “Quant Questions Asked in RBI Assistant Prelims 2017 (Memory Based)”

1. karthik

in this exam english is deciding factor…

1. PHENOMENAL

hr xam me hoti h

1. karthik

hmm i did 87, but english is there na? so waiting reasoning did 35/35, quants 30/35

1. Abhishek Singh Yaduvanshi

Qus 7 pls ..\$\$

2. Marry..

6th ans.??????????

1. DHANANJAY

Initially,
M…108 &w…0
After 1st operation
M…72…W…36
Again
M..36-5=31 &W…72-10=62
7 lit water added
62+7=69
69+31=100
69/100*100=69 lit

1. kitty??

w=36-5 &m=72-10 ?

1. mohd tahir

w:m = 1:2
w = 1/3*15, m=2/3*15

2. saxenamona164

38%

3. Ashish Kumar

38%

3. smiley :) :)

Iske solution nahi aayega ???

1. Shubhra

If doubt in any question, you can ask.

1. smiley :) :)

Kuch solve hue kuch nahi solve ho rahe
Ab 13 ques mai ek no find krna aata hai
Ab ye 2 no kese find krnge

1. Shubhra

2nd — 1/10 + 1/20 – 1/40 = 5/40 = 1/8
So 8 hours

13th
you can multiply the values and find total sum
Like average of 15 = 10, so total = 15*10 = 150
average of first 4 = 8, so total 4*8 = 32
average of last 7 = 9, so total 7*9 = 63
So now = sum of 5th and 6th = 150 – (32+63) = 55
So average = 55/2

1. smiley :) :)

Okk thank u :))

2. PHENOMENAL

maam 8 ques me circumference of semi circle =pi*r hota h perimeter of semi circle =pi*r+2r hota h

1. Shubhra

circumference and perimeter means the same
for semicircle, its pi*r+2r

3. ?poonam singh?

sir 2nd series ka logic?

4. Abhishek Singh Yaduvanshi

Qus 7 pls

1. Shubhra

Profit sharing ratio = 12600 : 10800 : 16200 = 7 : 6 : 9
so 9/(7+6+9) * x = 16200

Find — (7-6)/(7+6+9) * x

5. S.S.B

mam q no 6 plz how to solve it

1. Shubhra

108 l -pure milk
36 withdrew
and 36 water added
so
now milk = 108-36 = 72, and water = 36, ratio = 2 : 1
now 15 l mixture taken out and 7 k water added
milk become = 72 – 2/(2+1) * 15 = 62
water becomes = 36 – 1/3 * 15 + 7 = 38
total 62+38 = 100
so water = 38/100 * 100 = 38%

4. Divya Aggarwal

how to do 1 and 4??

1. ?♞???εˢＨ ?ᗩｂυ  ☢??

soln of que 1)
t(1)=30
t(2)=15
t(1)+t(2)+t(3) =25/2
lcm =150
so t(1) =5,t(2)=10 and t(1)+t(2) +t(3) =12 =>t(3) =(-3) => emptying pipe
so tym taken by emptying pipe =150/3 =50 mins
for 4 data is missing..:)

5. nervous 90s

1 ka ans plz

1. PHENOMENAL

1/a+1/b-1/c=total time jisme a aur b ki value di h total time bhi diya h c nikal lo , 4 me ek value x lo dusri 10,000-x lo dono ko add krke jo total value di h uske equal kr do ans aa jayega

1. nervous 90s

mera 12.5 aaya h. m i correct. And plz explain 4th one if possible

1. PHENOMENAL

ques incomplete h 4 wala total value nhi di

1. nervous 90s

kuch bhi assume kr lijiye n plz explain

2. nervous 90s

3. ?♞???εˢＨ ?ᗩｂυ  ☢??

d =20%
=>100 =1500
=>80 =1200 =sp
now p% =10%
cp———p/l——–sp
+10——-+1——–+11
now given that 100 rs less 10%profit
=>new sp =1100
=>11 ratio =1100
=>10 ratio =cp =1000rs

4. nervous 90s

shukriya ji 🙂 🙂 thank u

5. ?♞???εˢＨ ?ᗩｂυ  ☢??

heehehe madad krne mn mujhe khushi milti h thats it..:)

2. ?♞???εˢＨ ?ᗩｂυ  ☢??

t(1)=30
t(2)=15
t(1)+t(2)+t(3) =25/2
lcm =150
so t(1) =5,t(2)=10 and t(1)+t(2) +t(3) =12 =>t(3) =(-3) => emptying pipe
so tym taken by emptying pipe =150/3 =50 mins

1. nervous 90s

thank u 🙂

1. ?♞???εˢＨ ?ᗩｂυ  ☢??

..:)

6. nervous 90s

7. ?♞???εˢＨ ?ᗩｂυ  ☢??

que 10
100 =3200———2012
=>130 =4160——2013
now again
100 =4160——-2013
=>95 =3952——2014
now students in 2014 =3952
boys in 2014 = 2893
so girls in 2014 =3952-2893 =1059

8. ?♞???εˢＨ ?ᗩｂυ  ☢??

12)
given spd =x km/hr
now total distance travelled in x mins =x*x/60 =x^2/60
now a/c
x^2/60+23*15 =480
x^2/60 =135
=>x^2 =8100 =>x =90
now x spd =90km/hr and x mins =90/60 =1.5 hrs

9. kitty??

ques no 7 koi explain kr do ?

1. Shubhra

Profit sharing ratio = 12600 : 10800 : 16200 = 7 : 6 : 9
so 9/(7+6+9) * x = 16200

Find — (7-6)/(7+6+9) * x

10. Desire

Q-12

ans x=90 ??
verify it

1. Shubhra

yes 90