next number of the sequence 5, 20, 60, 120,...... will be

M4maths Previous Puzzles

18 Jul 2011 next number

next number of the sequence 5, 20, 60, 120,...... will be

OPtion

1) 60
2) 120
3) 240
4) 480
5) 360
6) 600
7) 1200
8) 2400
9) sequence is wrong
10) none of these

Solution

5 * 4 = 20
20 * 3 = 60
60 * 2 = 120
120 * 1 = 120

Correct Option: 2 Best Solution (17)

swetha   12 years AGO

the series followed as
5*4=20
20*3=60
60*2=120
120*1=120

Like? Yes (6) | No (2)  

sowmya   12 years AGO

5,20,60,120.......
5*4=20
20*3=60
60*2=120
120*1=120
so, optoin-2

Like? Yes (3) | No (1)  

abhilash   12 years AGO

the order is in decreasing multiples like 4,3,2,1.
so,the option is 120

Like? Yes (3) | No (2)  

prabhat   12 years AGO

5*4=20
20*3=60
60*2=120
120*1=120

Like? Yes (3) | No (2)  

Raj   12 years AGO

the sequence goes like 5*4=20,20*3=60,60*2=120. Hence the next number is 120*1 = 120.

Like? Yes (1) | No   

munish   12 years AGO

5 , 5*4 , 20 * 3 , 60 * 2 , 120 *1
so 120

Like? Yes (3) | No (2)  

Suman   12 years AGO

1*5=5
5*4=20
20*3=60
60*2=120
120*1=120

Like? Yes (3) | No (2)  

Shubham Kumar   12 years AGO

5*4=20
20*3=60
60*2=120
120*1=120

Like? Yes (1) | No   

Harini Reddy   12 years AGO

5*4=20
20*3=60
60*2=120
120*1=120

Answer:2)120

Like? Yes (3) | No (2)  

GUNDA NAGESH   12 years AGO

5*4=20
and then multiply 20 with 3 i.e.60. multiply 60 with 2 i.e 120 .in that way 120 is multiplied with 1 . so answer is 120

Like? Yes (1) | No   

Divyasri   12 years AGO

5*4=20
20*3=60
60*2=120
120*1=120

Like? Yes (2) | No (1)  

Aparajita Chowdhury   12 years AGO

5,20,60,120....
20=5*4
60=20*3
120=60*2
so next no. will be
120*1=120(option 2)

Like? Yes (2) | No (2)  

Subhradip Biswas   12 years AGO

5*4=20
20*3=60
60*2=120
120*1=120..
ans=120(2)

Like? Yes (1) | No (1)  

dharmil   12 years AGO

5*4=20.
20*3=60.
60*2=120.
120*1=120.

Like? Yes (1) | No (1)  

monika racharla   12 years AGO

20%5=4
60%20=3
120%60=2
120%120=1

Like? Yes (1) | No (1)  

Datla Kanthi   12 years AGO

the sequence is multiplying with decreasing order numbers 4,3,2,1
5 * 4 = 20
20 * 3 = 60
60 * 2 = 120
120* 1 = 120
so option 2

Like? Yes (1) | No (2)  

sacreties   12 years AGO

120 is the answer because 5*4,20*3,60*2,120*1,120

Like? Yes (1) | No (2)