Mixed Quantitative Aptitude Questions Set 141

Directions(1-5): Find the missing term '?' of the following series.

1. 525,524,516,489,?,300
   320
   425
   325
   400
   300
   Option B
   -1^3,-2^3,-3^3,-4^3,-5^3 ? = 425
   
    



2. 24,36,72,180,?,1890
   500
   525
   515
   540
   536
   Option D
   *1.5,*2,*2.5,*3,*3.5 ? = 540
   
    



3. 32,37,27,42,?,47
   18
   15
   20
   10
   22
   Option E
   +5,-10,+15,-20,+25 ?= 22
   
    



4. 12,10,17,47,?,909
   172
   180
   198
   177
   183
   Option E
   *1-2 *2-3 *3-4 *4-5 *5-6 ? = 183
   
    



5. 24,43,81,138,?,309
   200
   214
   232
   222
   220
   Option B
   +19*1 +19*2 +19*3 +19*4 +19*5 ? = 214
   
    



6. A boy covers 5 km north from his home, and then turns right to cover some distance at the speed of 4.8km/hr. in 2.5hours to reach his school. Find the shortest distance between his home and school.
   15
   20
   16
   13
   10
   Option D
   Distance = 4.8*2.5 = 12 km Shortest distance= (12^2 + 5^2)^1/2 = 13 km
   
    



7. Find the rate at which Rs.11500 yields Rs.5060 compound interest after 2 years when compounded annually.
   22
   18
   25
   20
   26
   Option D
   Let the rate be r% p.a. 5060 = 11500*{(1+r/100)^2 -1} => 16560/11500 = (1+r/100)^2 =>r = 20%
   
    



8. The profit percent on an article ‘X’ worth Rs.1500 is same as the loss percent on an article ‘Y’ worth Rs.2100. If the selling price of the article ‘Y’ is Rs.1680. Find the selling price of the article ‘X’.
   1000
   1200
   1800
   1400
   1600
   Option C
   Loss percent on article Y = (2100- 1680)/2100 = 20% Profit on X = 20% SP of article X = 1.2*1500 = Rs.1800
   
    



9. A and B monthly incomes were Rs. 42000 and Rs.30000 resp. If A’s expenditure was 2/3rd of his income and B’s expenditure was 3/4th of his income. Find the sum of the monthly savings of A and B?
   23000
   25025
   24470
   21500
   22600
   Option D
   A’s savings = 1/3*42000 = Rs.14000 B’s savings = ¾*30000 = Rs.7500 Sum = Rs.21500
   
    



10. The average height of all the males and all the females of a family is 172 cm and 180 cm resp. If the family has only married couples with no unmarried member. Find the average height of the family.
    190
    145
    160
    176
    157
    Option D
    Let the number of male members be x. Required average = (172x+180x)/2x = 176 cm