Quantitative Aptitude – Mixed Questions Set 2

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Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series and Quadratic Equations based on prelim pattern, which is common for SBI,IBPS, RBI,LIC, NICL and other  competitive exams.

1. 2,3,6,20,?
   A. 198
   B. 198.5
   C. 200
   D. 202
   E. 202.5
   
   Answer & Explanation

   Answer – E. 202.5
   Explanation :
   2² * 0.5 +1 = 3
   3² * 0.5 +1.5 = 6
   6² * 0.5 +2 = 20
   20² * 0.5 +2.5 = 202.5
   
   
2. 16,58,88,108,120, ?
   A. 124
   B. 126
   C. 136
   D. 142
   E. 154
   
   Answer & Explanation

   Answer – B. 126
   Explanation :
   16+7² -7 = 58
   58+6² -6 = 88
   88+5² -5 = 108
   108+4² -4 = 120
   120+3² -3 = 126
   
   
3. 20,100,160,200,220,?
   A. 240
   B. 260
   C. 270
   D. 280
   E. None
   
   Answer & Explanation

   Answer – E. None 
   Explanation :
   20+9² – 1² = 100
   100+8² – 2² = 160
   160+7² – 3² = 200
   200+6² – 4² = 220
   220+5² – 5² = 220
   
   
4. 224,?,444,1329,5312,26555
   A. 223
   B. 224
   C. 324
   D. 412
   E. 444
   
   Answer & Explanation

   Answer – A. 223
   Explanation :
   224*1-1 = 223
   223*2 -2 = 444
   444*3 – 3 = 1329
   1329*4 – 4 = 5312
   5312*5 – 5 = 26555
   
   
5. 10,10,30,70,130,?
   A. 160
   B. 170
   C. 180
   D. 190
   E. 210
   
   Answer & Explanation

   Answer – E. 210
   Explanation :
   10+5² -5² = 10
   10+6² -4² = 30
   30+7² – 3² = 70
   70+8² – 2² = 130
   130+9² – 1² = 210
   
   
6. An inlet pipe can fill an empty Tank in 2 hours. An outlet pipe can empty the same tank in 6 hours. The tank is also having a hole through which water leaks.The hole is draining water at the 1/3 rd rate of the outlet pipe. Now both Inlet and Outlet pipes are opened in a Tank which is already filled up to 4/9 of its capacity. Then in how many Hours the Tank will be filled thereafter?
   A. 1 hour
   B. 1 hour 12 min
   C. 1 hour 15 min
   D. 2 hours
   E. None
   
   Answer & Explanation

   Answer – D. 2 hours
   Explanation :
   1/2 – 1/6 – 1/18 = 15/54
   54/15*5/9 = 2
   
   
7. Parthiv’s wife age is 24 and his Son age is 12 as on today. On same day Partiv invented a Time Machine through which he travelled to ancient time. He stayed in ancient time for 6 Years then he returned back. But by Surprise, there is no change in Parthiv’s age after his return. If the difference between the average age of the family before and after is only 4 then Parthiv’s age is?
   A. 33
   B. 39
   C. 40
   D. 41
   E. Cannot be determined
   
   Answer & Explanation

   Answer – E. Cannot be determined
   Explanation :
   Based on above data
   (P+24+12)/3 – (P+30+18)/3 = 4
   P always get cancelled
   
   
8. Ramesh wishes to fence a rectangular farm of 2000m 2 area in which length is greater than breadth. He used 130mts of wire to fence the farm on three sides which is the least length of wire which can be utilized by him. The cost of 1 m wire is Rs.3 then how much difference would be there if he fences fours sides instead of three sides?
   A. Rs. 130
   B. Rs. 150
   C. Rs. 180
   D. Rs. 200
   E. None
   
   Answer & Explanation

   Answer – B. Rs. 150
   Explanation :
   l*b = 2000
   2b+l = 130
   l = 50 b= 40
   cost of fencing three sides = 130*3 = 390
   cost of fencing four sides = 180*3 = 540
   
   
9. A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?
   A. 10
   B. 20
   C. 30
   D. 40
   E. None
   
   Answer & Explanation

   Answer – A. 10
   Explanation :
   40*30 = 30*10+40*10+(40+x)*10
   x = 10
   
   
10. Sravan has to row from place A to place B and back in 6 hours which is at a certain distance. Due to bad light, he couldn’t recognize Place B and rowed 60 Km further. Then he realized and started return back to Place A. Due to this he travelled for 2 more hours than the original journey. Ratio of the speed of Boat to the stream is 2:1. Then what is entire distance covered by him?.
    A. 240 Km
    B. 300 Km
    C. 360 Km
    D. 480 Km
    E. Cannot be determined
    
    Answer & Explanation

    Answer – D. 480 Km
    Explanation :
    6 = D(1/3x+1/x)
    2= 60(1/3x+1/x)
    x = 40
    D =180
    Total distance travelled = (180+60)*2 = 480