Question

the 20th term of the sequence √5,√20,√45, ... is ?

Answer 1

sqrt(5,+15=20,+25=45,+35=80,+45=125)

maybe?

Answer 2

it consistent, but is it right?

Answer 3

i dont know .. i have options
20 √5 , 10V5

Answer 4

20 sqrt(5) seems the best bet

Answer 5

i think 1st is correct....but i dont know to find complex no. sequence..

Answer 6

1*sqrt(5)
2* "
3* "
4* "
....

Answer 7

20 sqrt 5 is correct

Answer 8

16
5
----
80

lol ... i wonder if mine works :)

Answer 9

how to do it ? pls tell me..

Answer 10

you find a pattern, and see which options fits

Answer 11

the nth term is n * sqrt5

Answer 12

okie...

Answer 13

so 20√5..

Answer 14

right

Answer 15

then why the 2nd term is not 2√5 ??

Answer 16

is it just multiplying 1st term with nth term?

Answer 17

it is sqrt20 = sqrt4 *sqrt5 = 2 sqrt 5

Answer 18

okie ... got it ...thanks a lot.. :)

Answer 19

third term = 3 * sqrt5 = sqrt9 * sqrt5 = sqrt 45

Answer 20

you r welcome