- 740 2.780 3.720 4.760 5.800

50 * 5 + 486 +

250 + 486 + 8 = 746 it is near to 740

2)

1.3600 2.3900 3.3300 4.4000 5.3000

4096 – 324 – 484 = 3288 it is near to 3300

3)

4)9.09% of 1334 + 14.30% of 2400 =?

1.486 2.465 3.450 4.430 5.418

9.09% of 1334 +14.28% of 2400

121+343 = 464 it is near to 465

5)% of 768.9 + 25% of 161.2 – 58.12 = ?

1.250 2.220 3.230 4.200 5.240

256 + 40 -58 =238 which is near to 240

]]>First, add individual numbers

13+18-16+26-22 = 19

19+0 =19

**Problem 2:**

-4+6-4 = 6

**Problem 3:**

49+121-81+144-196+256 = 293

**Problem 4:**

100% = 1

112

100+

x = 2.1

**Problem 2:**

Convert all terms into 9th power

9 – 5 + 4 = 8

**Problem 3:**

= 19

Square ends with 1 is 1 and 9

Delete one’s place and tens place

The number 3 is between and

18

Cube ends with 2 is 8

Delete ones, tens, hundred place

5 is between and

Select the least number i.e 1 so answer is 18

]]>3 * 5 + 5 = 20 (5=5*1)

20 * 4 + 8 = 88 (8=4*2)

88 * 3 + 9 = 273 (9=3*3)

273*2 + 2*4 = **554**

554*1 + 1*5 = 559

**Problem 2:** ? 48 96 240 720 2520

48 * 2 = 96

96 * 2.5 = 240

240 * 3 = 720

720 * 3.5 = 2520

1.5=

**Problem 3:** 1 ? 6 21 88 445

6 * 3 +3 = 21

21 * 4 + 4 = 88

88 * 5 + 5 = 445

1 * 1 + 1 = **2**

2 * 2 + 2 = 6

**Problem 4:** 6 4 5 11 ? 361

6 * 0.5 + 1 = 4

4 * 1 + 1 = 5

5 * 2 + 1 = 11

11 * 4 + 1 =**45**

45 * 8 + 1 =361

**Problem 5:** 180 179 183 156 172 ?

180 – 179 = -1 =

179 -183 = +4 =

183 – 156 = -27 =

156 – 172 = +16 =

172 – 125 = **47**

4 * 1 + 2 = 6

6 * 2 + 2 = 14

14 * 3 + 2 = 44

44 * 4 + 2 = **178**

**Problem 2:** 7 3 2 2 4 ?

7 * 0.5 – 0.5 = 3

3 * 1 -1 = 2

2 * 2 – 2 = 2

2 * 4 – 4 = 4

4 * 8 – 8 = **24**

Problem 3: 5 6 14 23 87 ?

5 – 6 = 1 =

6 – 14 = 8 =

14 – 23 = 9 =

87 – 23 = 64 =

87+25 = **112**

**Problem 4:** 5 6.2 9 13.4 19.4 ?

5 – 6.2 = 1.2

9 – 6.2 = 2.8

13.4 – 9 = 4.4

Second diference

2.8 – 1.2 = 1.6

4.4 – 2.8 = 1.6

1.6+4.4 = 6

1.6 + 6 + 19.4 = 27

**Problem 5:** 3 2 2 3 8 35 ?

3 * 1 – 1 = 2

2 * 2 – 2 = 2

2 * 3 – 3 = 3

3 * 4 – 4 = 8

8 * 5 – 5 =35

35 * 6 – 6 = 204

]]>3 * 5 – 6 = 9

9 * 4 – 5 = 31

31 * 3 – 4=89

89 * 2 – 3=175

175*1 – 2=**173**

**Problem 2:** 33 321 465 537 573 ?

321 – 33 = 288

465 – 321=144

537 – 465 = 72

573 – 537 = 36

18+573 = **591**

**Problem 3:** 16 8 12 30 ? 472.5

16 * 0.5 = 8

8 * 1.5 = 12

12 * 2.5 = 30

30 * 3.5 = **105**

105 * 4.5 = 472.5

**Problem 4:** 6 3.5 4.5 11 48 ?

6 * 0.5 + 0.5 = 3.5

3.5 * 1 + 1= 4.5

4.5 * 2 + 2 = 11

11 * 4 + 4 = 48

48 * 8 + 8 = **382**

**Problem 5:** 3 4.5 9 22.5 67.5 ? 945

3 * 1.5 = 4.5

4.5 * 2 = 9

9 * 2.5 = 22.5

22.5 * 3 = 67.5

67.5 * 3.5 = **236.25**

Double difference

7 -14 =+7

14 – 30 = +16

30 – 56 = +26

56 – 93 = 37

Second difference

7 – 16 = +9

16 – 26 = +10

26 – 37 = +11

12+37+93 = **142**

**Problem 2:** 11 13 20 111 ?

11 – 13 = 2 =

13 – 20 = 7 =

20 – 48 =28 =

48 – 111 = 63 =

**Problem 3:** 42 45 52 65 86 ?

Double difference

42 – 45 = 3

45 – 52 = 7

52 – 65 = 13

65 – 85 = 21

Second difference

3 – 7 = 4

7 – 13 = 6

13 – 21 = 8

10+21+86 = **117**

**Problem 4:** 7 5 7 17 63 ?

7*1 – 2 = 5

5*2 – 3 = 7

7*3 – 4 = 17

14*4 -5 =63

63 * 5 – 6 =**309**

**Problem 5:** 13 12 16 7 23 ?

13 -12 = -1 =

12 – 16 = +4 =

16 -7 = -9 =

7 – 23 = +16=

–=25

23-25 = **-2**

Solution:

64 – 46 = 18

**Problem 2:** The average age of the four players is 20 years. If the age of the coach is also included, the average age is increased by 20%. The age of the coach is?

Solution:

**Problem 3:** The age of the captain of a cricket team of 11 members is 26 years and the wicketkeeper of the team is 3 years older than the captain, if the ages of these two excluded then the average age of the team is one year less than the average age of the whole team. What is the average age of the team?

Solution:

Captain =26

Wicket keeper = 29

11-2=9

2a+9*1=26+29

2a = 55-9 = 46

a = 23

]]>Solution:

Average for 11 tests =100

Average = 5

Average+number*increment = Total

a+11*5=100

a=100-55=45

Shortcut:

a=100-11*5=45

N=a+5=45+5=50

**Problem 2:** The average age of 20 boys is 14 years. A boy who is 16 years old left them and one new boy replaces him. Then the average becomes 13.8 years. Find the age of the new boy?

Solution:

20*14 – 16+a= 13.8*20

280-16+a=276

a = 276-264 = 12

Shortcut:

16-0.2*20=12

**Problem 3:** The average temperature of Monday, Tuesday and Wednesday was and that of Tuesday, Wednesday and Thursday was . If the temperature on Monday was , then the temperature on Thursday was?

Solution:

T+W+TH = 33*3

M+T+W=30*3

TH-32=9

TH = 32+9 =41

]]>Solution:

A+B+C = 50*3 =150

A+B = 48*2 =96

B+C = 45*2 = 90

A+B+B+C = 186

A+B+C=150

B=36

**Problem 2:** The average age of eleven players in a cricket team decreases by 2 months when two new players are included in the team replacing two players of ages 17 years and 20 years. The average age of new players is?

Solution:

18years 6 months – 11

17 years 7 months

**Problem 3:** The average wages of a worker for 15 consecutive working days was Rs.90 per day. During the first 7 days, his average wages was Rs.87/day and the average wages during the last 7days was Rs.92/day. What was his wage on the 8th day?

Solution:

15*90 – 7*87 – 7*92

1350 – 609 -644

1350 – 643 = 97

Shortcut:

90+(3-2)*7=97

]]>