State Bank of India (SBI) - Clerk Exam - Quantitative Aptitude Study Materials - Set - 01

1. 12.5 % of 320 + 35.5 % of 250 = 21 % of 500 + X

a) 25.75 
b) 25.25   
c) 23.75   
d) 23.25
e) None of these

Answer: c) 23.75     

Explanation:

40 + 88.75 = 105 + X

X = 23.75

2. 1 (½)  + 2 (3/7)  + 6 (2/5) = 3/7 + X + 5/2

a) 7  (2/5)     
b) 6  (2/5)       
c) 5  (3/5)
d) 2  (7/10)   
e) None of these

Answer: a) 7  (2/5)     

Explanation: 

3/2 + 2   3/7 + 32/5 - 3/7 - 5/2 = X


X = 7 (2/5)

3. 25.5 * 23.5 * 105/5 = 1.5 X + 584.25

a) 6500           
b) 7000           
c) 7500
d) 8000           
e) None of these

Answer: d) 8000      

Explanation:

25.5 * 23.5 * 21 = 12584.25

12584.25 - 584.25 = 12000

1.5 X =12000

X = 8000

4. 9² * 81² * (6561 /81) = 3^2x

a) 16     
b) 8     
c) 4     
d) 12 
e) None of these

Answer: b) 8  

Explanation: 

3⁴ * 3⁸ * 3⁴ = 3^2x

2X = 16

X = 8

5. 6/5 of 6210 + 65% of 610 = 4X + 62.5

a) 1921.5         
b) 1946.5         
c) 1899.5
d) 1905.5         
e) None of these

Answer: b) 1946.5     

Explanation: 

6/5 of 6210 + 65% of 610 = 4X + 62.5

7452 + 396.5 -62.5 = 4X

4X = 7786


X = 1946.5


Directions (1-5): Find the missing number in the following number series? 

1. 15.6, 16.3, 17.7, 19.8, 22.6, ?

a) 26.1       
b) 25.3       
c) 27.4       
d) 26.7
e) None of these

Answer: a) 26.1     

Explanation:

15.6 + 0.7 = 16.3
16.3 + 1.4 = 17.7
17.7 + 2.1 = 19.8
19.8 + 2.8 = 22.6
22.6 + 3.5 = 26.1

2. 750, 1125, 1500, 1875,  2250, ?

a) 2555     
b) 2975     
c) 2625     
d) 2875
e) None of these

Answer: c) 2625  

Explanation:

750/2 * 3 = 1125

1125/3 * 4 = 1500

1500/4 * 5 = 1875

1875/5 * 6 = 2250

2250/6 * 7 = 2625

(or)

The difference of the difference is 375,

3. 2, 8, 17, 30.5, 50.75, ?

a) 80.125       
b) 82.125           
c) 82.5   
d) 81.125     
e) None of these

Answer: d) 81.125       

Explanation: *1.5 + 5 


4. 9, 5, 9, 25, 91, ?

a) 432           
b) 414         
c) 420
d) 415             
e) None of these

Answer: b) 414    

Explanation: *0.5 + 0.5,*1.5+1.5,*2.5+2.5, *3.5+3.5,*4.5 +4.5 

5. 21, 25, 34, 59, 108, ?

a) 218       
b) 220         
c) 225     
d) 229
e) None of these

Answer: d) 229

Explanation: Difference is prime square = 2², 3², 5², 7², 11²