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NCERT Exemplar Solutions Class 8 Mathematics Solutions for Playing with Numbers - Exercise in Chapter 13 - Playing with Numbers
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A four-digit number aabb is divisible by 55. Then possible value(s) of b is/are
(a) 0 and 2
(b) 2 and 5
(c) 0 and 5
(d) 7
Answer:
The correct answer is option (c) 0 and 5
Explanation:
It is known that if a number is divisible by 55, then the number should be divisible by the factors of 55. It means that the number aabb is divisible by 5. By using the divisibility test of 5, it must be 0 or 5.
Video transcript
"hi students i am debji dhawal tutor
at leader learning i teach maths and
science and i love these two subjects as
well
so today we have a question from maths
what's the question a four digit number
aabb
is divisible by 55 then the possible
values of
b is or are a b c and d
so let's check so it is known right
it is known that i'm just writing it
down for your convenience it is known
that if a number
is divisible
by 55 then
the number should be divisible by its
factor also the number
should be divisible i'm just writing it
down for your convenience
by factor of 55 right factor of 55
that means we can also say that
the number aabb a
a b p is divisible by
5 y 5 cos 5 is a factor of 55
by using divisibility test of 5 okay i'm
just writing it down right
by using divisibility
test of five
so it must be how much it
must be we know answer it must be
zero or five so we have our
answer and the correct answer is option
c 0 and 5
okay the character answer is option c 0
and 5. so i hope you like this video
subscribe to our channel for more
updates if you have any doubt or query
you can comment in the comment section
and reach out to us see you soon in the
leader classes
come have a class with us take care and
bye bye
"
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