Mixed Quantitative Aptitude Questions Set 137

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

1. 17,18,35,?,88,141
   70
   78
   81
   88
   92
   Option D
   17+18
   18+35
   53+35
   88+53
   ? = 88
   
   
    



2. 300,280,252,216,172,?
   110
   130
   140
   120
   150
   Option D
   -4*5
   -4*7
   -4*9
   -4*11
   -4*13
   ? = 120
   
   
    



3. 19,20,42,129,?,2605
   500
   450
   447
   520
   546
   Option D
   *1+1
   *2+2
   *3+3
   *4+4
   *5+5
   ? = 520
   
   
    



4. 17,38,80,143,227,?
   345
   300
   332
   318
   325
   Option C
   +21*1
   +21*2
   +21*3
   +21*4
   +21*5
   ? = 332
   
   
    



5. 363,353,333,303,?,213
   263
   225
   250
   263
   245
   Option A
   -10,-20,-30,-40,-50
   ? = 263
   
   
    



6. When 50% of first number is added to the second number then second number increases by 25% . Find the ratio of first number to the second number.
   3:5
   5:7
   1:2
   2:5
   1:4
   Option C
   Let the first number be x and second number be y resp.
   50% of x + y = 1.25y
   =>x : y = 1:2
   
   
    



7. A mixture of contains 360 litres of milk and water in the ratio of 5:4 resp. x litres of mixture is taken out and replaced with same quality of water such that of milk and water becomes 1:1 resp.Find the value of x.
   30
   44
   36
   28
   39
   Option C
   Quantity of milk = 5/9*360 = 200 L
   Quantity of water = 4/9*360 = 160 L
   200 – (5x/9) = 160 – (4x/9)+ x
   => x = 36 L
   
   
    



8. A,B and C started a business together with a total investment of Rs.3600. After a year , A and B received a profit of Rs.1500 and Rs.2000 out of the total profit of Rs.6000. Find the inital investment of C (in Rs.)
   1000
   1500
   1400
   1300
   1200
   Option B
   Ratio of investment of A:B:C = 1500:2000:(6000-1500-2000)
   = 3:4:5
   Initial investment of C = 5/(3+4+5)*3600 = Rs.1500
   
   
    



9. The ratio of the units digit to the tens digit of two digit number is 4:1 and the sum of digits is 10. Find the product of digits of number.
   10
   14
   16
   19
   13
   Option C
   Unit’s digit be 4x and ten’s digit be x resp.
   4x+x = 10
   x = 2
   Required number = 28
   Product of digits = 2*8 = 16
   
   
    



10. A bag contains (x+2) red balls, (x+3) green balls and (x+4) yellow balls. If the probability of drawing a red ball from the bag is 3/10. Find the number of green balls in the bag.
    13
    18
    10
    12
    14
    Option C
    Total number of balls in the bag = 3x+9
    Probability of drawing a re ball = 3/10
    (x+2)/(3x+9) = 3/10
    =>x = 7
    Total number of green balls = 7+3 = 10