**Hello Aspirants.**

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.

**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**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**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**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**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**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**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**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**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**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

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