Dr.Dipin Singh   9 years AGO

0.5+1.5*1=2
2+1.5*3= 6.5
6.5+1.5*3*3=20
20+1.5*3*3*3 = 60.5 ... option 5

Like? Yes (8) | No (1)  

venkatesh.p   9 years AGO

0.5,2,6.5,20,......

0.5x3 + 0.5 = 2 2x3 +0.5 = 6.5 6.5x3 +0.5 = 20 20x30+0.5 = 60.5

Like? Yes (4) | No (1)  

K.ARun   9 years AGO

Difference of 2nd and 1st no and multiply it by 3 and add them with the current no.
0.5 ------> (0.5-0)*3 + 0.5 -------> 2
2 -----> (2-0.5)*3 + 2--------> 6.5
6.5 ------>(6.5-2)*3 + 6.5------> 20
20 ------->(20-6.5)*3 + 20 -----> 60.5

Like? Yes (6) | No (4)  

Santosh Kumar Behera   9 years AGO

.5*3=1.5+.5=2
2*3=6+.5=6.5
6.5*3=19.5+.5=20
so 20*3=60+.5=60.5

Like? Yes (2) | No   

Vinay Sipani    9 years AGO

0.5 * 3 + 0.5 = 2
2 * 3 + 0.5 = 6.5
6.5 * 3 + 0.5 = 20

=> next term = 20 * 3 + 0.5 = 60.5

Like? Yes (2) | No (1)  

Jaspalsingh Parmar   9 years AGO

2-0.5=1.5
6.5-2=4.5
20-6.5=13.5

As we see answer is multiple of 3 to the previous answer
so
13.5*3=40.5

20+40.5=60.5
So the option 5 is correct

Like? Yes (2) | No (1)  

Supriya Mondal   9 years AGO

Difference between 1st and 2nd number is=1.5
and difference between 2nd and 3rd number is=4.5 which is 3 times of the difference between 1st and 2nd number.
Like that difference between 3rd and 4th number is=13.5 which is 3 times of the difference between 2nd and 3rd number.
like that, difference between 4th and 5th number is=(13.5*3)=40.5
So, next number is (20+40.5)=60.5
So option 5)60.5 will be the correct answer

Like? Yes (2) | No (1)  

Devendra Marghade   9 years AGO

0.5+ 0.5*3= 0.5+1.5 =2
2+ 1.5*3= 2+ 4.5= 6.5
6.5+4.5*3= 6.5+ 13.5=20
20+13.5*3= 20+ 40.5=60.5

Like? Yes (1) | No   

ITHA Naresh Babu   9 years AGO

1/2,4/2,13/2,40/2.........
diffrence in numerators is 3,9,27,81.........
so next number will be (40+81)/2=121/2=60.5

Like? Yes (1) | No   

Tania Chatterjee   9 years AGO

.5 + (3^1)*.5 =2
2+(3^2)*.5=6.5
hence 20+((3^4)*.5=60.5

Like? Yes (1) | No   

Surit Datta   9 years AGO

The difference between 2 and .5 is 1.5
difference between 6.5 and 2 is 4.5
which is thrice of the first difference
similarly difference between 20 and 6.5 is 13.5
which is thrice of the second difference
continuing this way the next difference will be
13.5*3 = 40.5
so the next number will be
20+40.5
which is 60.5
That's it..
Option 5

Like? Yes (1) | No   

llamar   9 years AGO

0.5*3=1.5+0.5=2
2*3=6+0.5=6.5
6.5*3=19.5+0.5=20
20*3=60+0.5=60.5

Like? Yes (1) | No   

P.ARUNA   9 years AGO

0.5+(0.5)*3=2
2+(0.5)*9=6.5
6.5+(0.5)*27=20
20+(0.5)*81=60.5

Like? Yes (2) | No (1)  

MRITUNJAY   9 years AGO

multiply by 3 and add 0.5
20*3+0.5=60.5

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tirupathi reddy   9 years AGO

0.5, 2, 6.5, 20, .....
0.5 + 1.5. = 2
2 + 1.5*3 = 6.5
6.5 + 4.5*3 = 20
20 + 13.5*3 = 60.5

Like? Yes (1) | No   

sravani   9 years AGO

diff 0.5,2=1.5
diff 2,6.5=4.5=1.5*3
diff 6.5,20=13.5=1.5*9
next 20,60.5=40.5=1.5*27

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SREENIVASA RAO PALLAPU   9 years AGO

2-0.5 =1.5
6.5 - 2 = 4.5 (i.e 1.5 x 3)
20 - 6.5 = 13.5 (i.e 4.5 x 3)
next number = 20 + (13.5 x 3) = 60.5

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vikram   9 years AGO

0.5*2=1+1=2
2*2=4+2.5=6.5
6.5*2=13+7=20
20*2=40+20.5=60.5

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MURUGESAN.P   9 years AGO

2-.5=1.5
6.5-2=4.5
20-6.5=13.5
4.5-1.5=3(3^1)
13.5-4.5=9(3^2)
next difference will be 27(3^3)
so the series is
.5,2,(3+1.5+2),(9+4.5+6.5),(27+13.5+20)
this equal to .5,2,6.5,20,60.5
so the ans is 60.5

Like? Yes (1) | No   

khushboo goenka   9 years AGO

add 1.5 thn 4.5 thn 13.5 thn 40.5

Like? Yes (1) | No   

Ajinkya Kulkarni   9 years AGO

60.5

Like? Yes (1) | No   

sanjeev kumar   9 years AGO

Ans 5

Like? Yes (1) | No   

PAWAN KUMAR   9 years AGO

(0.5-0)*3 + 0.5 = 2
(2-0.5)*3 + 2.0 = 6.5
(6.5-2)*3 + 6.5 = 20
(20-6.5)*3 + 20 = 40.5 + 20 = 60.5. Ans.

Like? Yes (1) | No   

nikhil   9 years AGO

1)0.5*1=0.5
2)0.5*1+0.5*3+0.5*9+0.5*27+0.5*81=60.5

Like? Yes (1) | No   

K.NagaSugunaManasa   9 years AGO

.5,2,6.5,20
2-0.5=1.5 6.5-2=4.5 , 20-6.5=13.5;
4.5-1.5=3, 13.5-4.5=9,so next is 27(3*3*3)
s0 27+13.5=40.5
so add 40.5 to 20
40.5+20=60.5
option is 5

Like? Yes (1) | No   

Ankit Pandey   9 years AGO

0.5*4=2
2*3+2/4=6.5
6*3+0.5*4=20
20*3+20/40=60.5

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Md.Sultan Khichi   9 years AGO

.5*3+.5=2
2*3+.5=6.5
6.5*3+.5=20
20*3+.5=60.5
Ans. 60.5

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shovan Manna   9 years AGO

the sequence is like *3+.5 with previous term to get the net term

Like? Yes (1) | No   

lavanya   9 years AGO

0.5=1/2
2=4/2
6.5=13/2,
20=40/2,
and the difference between numerators is 3,9,27,81...
ans is 121/2=60.5

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shree   9 years AGO

(.5*3+0.5), (2*3+0.5), (6.5*3+0.5), (20*3+0.5=60.5)
=> 60.5 is ans

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MRITUNJAY KUMAR   9 years AGO

Option)5

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SHANMUGAPRIIYAN   9 years AGO

0.5+(3*05)=2
2+(3 pow 2*0.5)=6.5 3 pow 2=9
6.5+(3 pow 3*0.5)=20 3 pow 3=27
therefore, 20+(3 pow 4*0.5)=60.5 3 pow 4=81
ANSWER 60.5

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ABHINAV PUSHPAM   9 years AGO

*3+.5 in each no.

Like? Yes (1) | No (1)  

Rats   9 years AGO

(.5*3)+.5=2
(2*3)+.5=6.5
(6.5*3)+.5=20
(20*3)+.5=60.5

Like? Yes (1) | No (1)