Question

*15. Three girls are climbing down a
staircase. One girl climbs down two
steps at one go. The second girl three
steps at one go and the third climbs
down four steps. They started together
from the beginning of the staircase​

Answer 1

Answer:

first find out lcm of 2,3and4

it is 12

now create steps by factors

all odds can be eliminated as they can only be factors of 3 and not a pair

now take all evens and factorise

2 only one footstep

4 two steps

6 two steps

8 two steps

10 only one step

12 all three steps

so at three steps there are paired footsteps

Step-by-step explanation:

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