Find the least square number divisible by 5, 10, 15. (a) 100 (b) 625 (c) 900 (d) 225

-

900

Verification:-

a) 100

→ = 20

→ = 10

→ = 6⅔

100 is not divisible by 15

b) 625

→ = 125

→ = 62.5

→ = 41.6

625 is not divisible by 10 and 15.

c) 900

→ = 180

→ = 90

→ = 60

900 is the correct answer.

d) 225

→ = 45

→ = 22.5

→ = 15

225 is not divisible by 15

900 is the correct answer.

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

correct answer is c. just did it

step-by-step explanation: