# Important Numerical Ability Quiz For SBI Clerk Prelims 2020 Check Here

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**1.68% of 2576 + 26% of 1468 – 430 =?**

- A1620
- B1930
- C1540
- D1703.36

Answer1703.36

Notes(1751.68 +381.68) – 430 = 1703.36

**2.(42.05)2 ‒ (28.9)2 ‒ (21.9)2=?**

- A470
- B439
- C420
- D680

Answer439

Notes(42)2 ‒ (29)2 ‒ (22)2 = (1764 – 841 ‒ 484)=439

**3.7742 ÷ 79 × 15 =? × 6**

- A300
- B250
- C150
- D100

Answer300

Notes 7742/79 × 15 =? × 6 = 300

**4.605/55÷24/2208×147/161=?**

- A940
- B960
- C924
- D1260

Answer924

Notes605/55×2208/24×147/161= 924

**5.299 1/7+2992/7+2993/7+2994/7+2995/7+2996/**

- A1497
- B2994
- C1794
- D1797

Answer1797

Notes299 1/7+2992/7+2993/7+2994/7+2995/7+2996/7 = (299*6) + (1/7+2/7+3/7+4/7+5/7+6/7) = 1794+3=1797

**6.The value of (162×84)/216 =?**

- A41/5
- B20/3
- C23/7
- D16

Answer16

Notes(162×84)/216 = [(24)2 × (23)4]/216 = (28×212)/216 = 220/216 = 24= 16

**7.(48+20×8+8)/(12×12+6×12)= ?**

- A1
- B7
- C17/77
- DNone of These

Answer1

Notes (48+20×8+8)/(12×12+6×12) = (48+160+8)/(144+72)=216/216=1.

**8.Evaluate: (9 ‒ 2 ‒ [ 4 ‒ (1 + 1)]÷2)/(|6 ‒ 2| ‒ |3 ‒ 6 |÷3)**

- A2
- B3
- C4
- D5

Answer2

Notes(7 ‒ [4 ‒ 2] ÷ 2)/(|4|‒ |‒3| ÷ 3) = (7 ‒ 2 ÷ 2)/(4 ‒ 3 ÷ 3) = (7 ‒ 1)/(4 ‒ 1) = 6/3 =2

**9.7 6/3 of 7.2 ÷ 1.05 of ?=144.72**

- A3.245
- B2.453
- C2.354
- DNone of these

Answer2.354

Notes27/3 × 7.2 ÷ 1.05 × ? = 144.72 =61.71 × ? = 144.72 =? = 2.345

**10. 862 + 472- √(?)=8309**

- A36
- B46
- C34
- D44

Answer36

Notes√(?) = (862 + 472) ‒ 8309 = 9605 – 8309 = 1296 =?=√1296 =36

**11.2322, 2242,? , 2142, 2122**

- A2162
- B2182
- C2172
- D2152

Answer2182

Notes2322 ‒ 80=2242 =2242 ‒ 60=2182 =2182 ‒ 40=2142 =2142 ‒ 20=2122

**12.26, 29, 38, ?, 110**

- A68
- B59
- C57
- D67

Answer57

Notes46 + (2×12+1) = 29 =29 + (2×22+1) = 38 =38 + (2×32+1) = 57 =57 + (2×42+1) = 90

**13.10, 100, 101, 1010, ? ,10110**

- A1009
- B1001
- C1011
- DNone of these

Answer1011

NotesThe numbers are divided by 0.1 and added with 1 consequently 10 ÷ 0.1 = 100 100 + 1 = 101 101 ÷ 0.1 = 1010 1010 + 1 = 1011 1011 ÷ 0.1 = 10110

**14.900, 540, 324,?, 116.64**

- A378.8
- B194.4
- C398.8
- D408.8

Answer194.4

NotesEvery consequent number is multiplied by 0.6

**15.3, 7, 12, 22, 21, 37, 30, ?**

- A62
- B52
- C56
- DNone of these

Answer52

NotesThere are two series here =3, 12, 21, 30, ... (Increase by 9) =7, 22, 37, ... (Increase by 15) =Hence, next term is 37+15 = 52

**16.83% of the students of a certain class took Economics and 42% took Business studies. If each student took at least one of Economics or business studies and 90 students took both of these subjects, the total number of students in the class is?**

- A300
- B340
- C360
- D320

Answer360

NotesPercentage of student opting for both subjects =83 + 42 – 100 = 90 =(25/100) x = 90 = x = (90 ×100)/25 = 360

**17.A shopkeeper sold an article at profit of 30%.If both the cost price and selling price is lowered by Rs. 100.Then the profit would be 4% more than before. Then find the cost price of the article?**

- A780
- B820.20
- C780.60
- D850

Answer850

NotesC.P. 100%, S.P. 130% When Rs. 100 is less then, C.P. = 100% - 100 S.P. = 130% - 100 So, profit increase = 30% +4% = 34% 120% - 100 = (100% -100)134/100 4% = 34 100% = 34/4×100=850

**18.A shopkeeper fixes the marked price of an item 50% above its CP. The percentage of discount allowed to gain 20% is:**

- A16.66%
- B20.66%
- C20%
- DNone of these

Answer20%

NotesLet CP = 100 MP = 100 + 50% of 100= 150 Gain = 25% of 100 = 20 SP = 100 + 20 = 120 Discount = MP – SP = 150 – 120 = 30 Discount % = (30/150) × 100 = 20%

**19.Cost price of two laptops is the same. One is sold at a profit of 15% and the other for Rs. 5200 more than the first. If the net profit is 20% then find the cost price of each laptop:**

- ARs. 52000
- BRs. 54000
- CRs. 36000
- DCan’t be determined

AnswerRs 52,000

NotesLet the CP of each laptop be Rs x, then = 2(1.15x) + 5200 = 2(1.2x) =0.1x = 5200 = x = 52000

**20.Of the four numbers, whose average is 60, the first is one-fourth of the sum of the last three. The second number is one-third of the sum of the other three, and the third is half of the other three. Find the fourth number.**

- A52
- B48
- C80
- DNone of these

Answer52

NotesLet the numbers be a, b, c, d =a = 1/4 (b + c + d) =4a = (b + c + d) Average = 60 (a + b + c + d)/4 = 60 5a/4 = 60 ⇒ a = 48 Similarly, b = 60, & c = 80 Also, it is known that average = 60, =a + b + c + d =240 =d = 52.

**21.A person purchases two varieties of wheat – one costing Rs. 11.50 per kg and the other costing Rs. 14.25 per kg, in the ratio 1 : 2. He sells the mixed variety at Rs. 18 per kg. What is his profit percentage?**

- A35
- B40
- C30
- DNone of these

Answer35%

NotesC.P. of 3 kg wheat = (1 × 11.50 + 2 × 14.25) = (11.50 + 28.50) = Rs. 40 S.P. of 3 kg mixed rice = 3 18 = 54 Profit = S.P. – C. P. = 54 – 40 = 14 Profit% = Profit/(C.P) × 100= 14/40 × 100 = 35%

**22.The salaries of X, Y, Z are in the ratio 4: 6 : 10. If increment of 25%, 20% and 30% are allowed respectively in their salaries, then what will be the new ratio of their salaries?**

- A25: 36 : 65
- B20: 16 : 65
- C25: 16 : 55
- DNone of these

Answer25:36:65

NotesLet X= 4k, Y = 6k and Z = 10k X’s new salary = 125% of 4k = 125/100 x 4k = 5k Y’s new salary = 120% of 6k = 120/100 x 6k = 36/5k Z’s new salary = 130% of 10k = 130/100 x 10k = 13k New ratio = 5k : 36/5k : 13k = 25: 36 : 65

**23. If Ram walks 40 km at 5 km/hr, he will be late by 1 hour and 20 minutes. If he walks at 8 km per hr, how early from the fixed time will he reach?**

- A1 hour and 15 minutes
- B1 hour and 25 minutes
- C1 hour and 40 minutes
- DNone of these

Answer01 hour and 40 minutes

Notes1st case time taken = 40/5 = 8 hours 2nd case = 40/8 = 5 hours Scheduled time = 8 hours – 80 minutes = 6 hours and 40 minutes. If Ram walks at a speed of 8 km /hour, then he takes 5 hours to reach the destination and the fixed time is 6 hours and 40 minutes. He reaches early by 1 hour and 40 minutes

**24.Two trains 137m and 163m in lengths are running towards each other on parallel lines, one at the rate of 42 kmph and another at 48 kmph. In what time will they be clear of each other from the moment they meet?**

- A10 sec
- B12 sec
- C14 sec
- D16 sec

Answer12 Sec

NotesRelative speed of the trains = (42 + 48) kmph = 90 kmph = (90 × 5/18) m/sec = 25m/sec. Time taken by the trains to pass each other = Time taken to cover (137+163) m at 25m/sec = (300/25) sec = 12 sec.

**25.There are four members in a family. The average age of the family is 15 years when a new baby is born in the family. What will be the average age of the family when the baby will be 5 years old?**

- A17
- B20
- C15.5
- DNone of these

Answer17

NotesPresent total age of family = 15 X 4 = 60 After five years, Total age of the family = 60 + 5 + 5 x 4 = 85 Average age of the family will be: Total age of family/ total members = 85/5 = 17

**26.A can complete a work working 4 hours a day in 5 days and B can complete the same work in 5 days working 4 hours a day. If both work together for 8 hours a day, how many days will it take to complete the job?**

- A10
- B1 2/8
- C1 8/2
- DNone of these

Answer1 2/8

NotesA works (4*5)= 20 hours B works (5*4)= 20 hours Work done by A in 1 hour= 1/20 Work done by B in 1 hour= 1/20 A and B’s one hour’s work= 1/20+1/20=1/10 So A and B can together work for 10 hours to finish the job 10 hours (in terms of 8 hours per day) = 1 2/8 days

**27.**

- A
- B
- C
- D

Answer