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Maths CBSE Live product
Class 7 (2025-26)
Expressions using letter number
Annual Revision I - Expressions using letter number
12.
Identify the colour
Question:
5
m.
A
signal
light changes in the
pattern
red
→
green
→
yellow
→
red
... for
each
\(10\)
seconds
. The colour at the
143
\(^{th}\)
second
is:
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